Search a number
-
+
61084508071 = 19231072814649
BaseRepresentation
bin111000111000111010…
…111001111110100111
312211200002021112010211
4320320322321332213
52000100113224241
644021205000251
74261505515546
oct707072717647
9184602245124
1061084508071
11239a6681024
12ba090b3087
1359b6345642
142d5691c15d
1518c7a78781
hexe38eb9fa7

61084508071 has 32 divisors (see below), whose sum is σ = 67977792000. Its totient is φ = 54629245440.

The previous prime is 61084508057. The next prime is 61084508077. The reversal of 61084508071 is 17080548016.

It is a cyclic number.

It is not a de Polignac number, because 61084508071 - 25 = 61084508039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61084508077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13136955 + ... + 13141603.

It is an arithmetic number, because the mean of its divisors is an integer number (2124306000).

Almost surely, 261084508071 is an apocalyptic number.

61084508071 is a deficient number, since it is larger than the sum of its proper divisors (6893283929).

61084508071 is a wasteful number, since it uses less digits than its factorization.

61084508071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 61084508071 in words is "sixty-one billion, eighty-four million, five hundred eight thousand, seventy-one".

Divisors: 1 19 23 107 281 437 2033 2461 4649 5339 6463 30067 46759 88331 106927 122797 497443 571273 691541 1306369 2031613 9451417 11441189 13139279 24821011 30046487 139781483 217382591 570883253 2655848177 3214974109 61084508071