15260661556 has 48 divisors (see below), whose sum is σ = 31002314112. Its totient is φ = 6437376000.

The previous prime is 15260661551. The next prime is 15260661571. The reversal of 15260661556 is 65516606251.

It is a super-2 number, since 2×15260661556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15260661551) 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 15 ways as a sum of consecutive naturals, for example, 3000936 + ... + 3006016.

It is an arithmetic number, because the mean of its divisors is an integer number (645881544).

Almost surely, 2^15260661556 is an apocalyptic number.

It is an amenable number.

15260661556 is an abundant number, since it is smaller than the sum of its proper divisors (15741652556).

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

15260661556 is a wasteful number, since it uses less digits than its factorization.

15260661556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760 (or 6758 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 15260661556 in words is "fifteen billion, two hundred sixty million, six hundred sixty-one thousand, five hundred fifty-six".