Search a number
-
+
668048870743 = 8919782746073
BaseRepresentation
bin10011011100010101101…
…00001100110101010111
32100212100110210212012021
421232022310030311113
541421131002330433
61230521501434011
766156605465122
oct11561264146527
92325313725167
10668048870743
11238355198351
12a958026b907
134acc5aabbb7
1424495ac33b9
151259e02122d
hex9b8ad0cd57

668048870743 has 16 divisors (see below), whose sum is σ = 679820027040. Its totient is φ = 656380781056.

The previous prime is 668048870729. The next prime is 668048870789. The reversal of 668048870743 is 347078840866.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-668048870743 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 (668048874743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14476755 + ... + 14522827.

It is an arithmetic number, because the mean of its divisors is an integer number (42488751690).

Almost surely, 2668048870743 is an apocalyptic number.

668048870743 is a deficient number, since it is larger than the sum of its proper divisors (11771156297).

668048870743 is a wasteful number, since it uses less digits than its factorization.

668048870743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47186.

The product of its (nonzero) digits is 43352064, while the sum is 61.

The spelling of 668048870743 in words is "six hundred sixty-eight billion, forty-eight million, eight hundred seventy thousand, seven hundred forty-three".

Divisors: 1 89 197 827 17533 46073 73603 162919 4100497 9076381 14499791 38102371 807797909 3391111019 7506167087 668048870743