261557675596 has 48 divisors (see below), whose sum is σ = 545914123776. Its totient is φ = 107211671424.

The previous prime is 261557675551. The next prime is 261557675609. The reversal of 261557675596 is 695576755162.

It is a happy number.

261557675596 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 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, 11391840 + ... + 11414776.

It is an arithmetic number, because the mean of its divisors is an integer number (11373210912).

Almost surely, 2^261557675596 is an apocalyptic number.

It is an amenable number.

261557675596 is an abundant number, since it is smaller than the sum of its proper divisors (284356448180).

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

261557675596 is a wasteful number, since it uses less digits than its factorization.

261557675596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40678 (or 40676 counting only the distinct ones).

The product of its digits is 119070000, while the sum is 64.

The spelling of 261557675596 in words is "two hundred sixty-one billion, five hundred fifty-seven million, six hundred seventy-five thousand, five hundred ninety-six".