15760542681 has 135 divisors (see below), whose sum is σ = 27136180071. Its totient is φ = 9111263616.

The previous prime is 15760542673. The next prime is 15760542683. The reversal of 15760542681 is 18624506751.

The square root of 15760542681 is 125541.

It is a perfect power (a square), and thus also a powerful number.

15760542681 is a `hidden beast` number, since 1 + 576 + 0 + 54 + 26 + 8 + 1 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 6486852681 + 9273690000 = 80541^2 + 96300^2 .

It is not a de Polignac number, because 15760542681 - 2³ = 15760542673 is a prime.

It is a super-2 number, since 2×15760542681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15760542683) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 425960595 + ... + 425960631.

Almost surely, 2^15760542681 is an apocalyptic number.

15760542681 is the 125541-st square number.

15760542681 is the 62771-st centered octagonal number.

It is an amenable number.

15760542681 is a deficient number, since it is larger than the sum of its proper divisors (11375637390).

15760542681 is an equidigital number, since it uses as much as digits as its factorization.

15760542681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 15760542681 in words is "fifteen billion, seven hundred sixty million, five hundred forty-two thousand, six hundred eighty-one".