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83054678574 = 23783121719577
BaseRepresentation
bin100110101011001110…
…0011101001000101110
321221101020000211020110
41031112130131020232
52330043444203244
6102053234000450
76000113056020
oct1152634351056
9257336024213
1083054678574
113225022332a
121411aa16126
137aa7c5212a
14403c736010
1522617639b9
hex135671d22e

83054678574 has 64 divisors (see below), whose sum is σ = 192294176256. Its totient is φ = 23423545344.

The previous prime is 83054678573. The next prime is 83054678599. The reversal of 83054678574 is 47587645038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83054678573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4232674 + ... + 4252250.

It is an arithmetic number, because the mean of its divisors is an integer number (3004596504).

Almost surely, 283054678574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83054678574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96147088128).

83054678574 is an abundant number, since it is smaller than the sum of its proper divisors (109239497682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83054678574 is a wasteful number, since it uses less digits than its factorization.

83054678574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20889.

The product of its (nonzero) digits is 22579200, while the sum is 57.

The spelling of 83054678574 in words is "eighty-three billion, fifty-four million, six hundred seventy-eight thousand, five hundred seventy-four".

Divisors: 1 2 3 6 7 14 21 42 83 166 249 498 581 1162 1217 1743 2434 3486 3651 7302 8519 17038 19577 25557 39154 51114 58731 101011 117462 137039 202022 274078 303033 411117 606066 707077 822234 1414154 1624891 2121231 3249782 4242462 4874673 9749346 11374237 22748474 23825209 34122711 47650418 68245422 71475627 142951254 166776463 333552926 500329389 1000658778 1977492347 3954984694 5932477041 11864954082 13842446429 27684892858 41527339287 83054678574