2561313530604 has 96 divisors (see below), whose sum is σ = 6068254832640. Its totient is φ = 840769113600.

The previous prime is 2561313530593. The next prime is 2561313530623. The reversal of 2561313530604 is 4060353131652.

2561313530604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136281432 + ... + 136300224.

It is an arithmetic number, because the mean of its divisors is an integer number (63210987840).

Almost surely, 2^{2561313530604} is an apocalyptic number.

It is an amenable number.

2561313530604 is an abundant number, since it is smaller than the sum of its proper divisors (3506941302036).

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

2561313530604 is a wasteful number, since it uses less digits than its factorization.

2561313530604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19591 (or 19589 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 2561313530604 in words is "two trillion, five hundred sixty-one billion, three hundred thirteen million, five hundred thirty thousand, six hundred four".