2561526032660 has 24 divisors (see below), whose sum is σ = 6147662478720. Its totient is φ = 878237496864.

The previous prime is 2561526032603. The next prime is 2561526032669. The reversal of 2561526032660 is 662306251652.

It is a super-2 number, since 2×2561526032660² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561526032669) 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 7 ways as a sum of consecutive naturals, for example, 9148307120 + ... + 9148307399.

It is an arithmetic number, because the mean of its divisors is an integer number (256152603280).

Almost surely, 2^{2561526032660} is an apocalyptic number.

2561526032660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2561526032660 is an abundant number, since it is smaller than the sum of its proper divisors (3586136446060).

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

2561526032660 is a wasteful number, since it uses less digits than its factorization.

2561526032660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18296614535 (or 18296614533 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 2561526032660 in words is "two trillion, five hundred sixty-one billion, five hundred twenty-six million, thirty-two thousand, six hundred sixty".