261613652161704 has 32 divisors (see below), whose sum is σ = 665119454652000. Its totient is φ = 85726507487552.

The previous prime is 261613652161657. The next prime is 261613652161801. The reversal of 261613652161704 is 407161256316162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92377700619 + ... + 92377703450.

It is an arithmetic number, because the mean of its divisors is an integer number (20784982957875).

Almost surely, 2^{261613652161704} is an apocalyptic number.

261613652161704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

261613652161704 is an abundant number, since it is smaller than the sum of its proper divisors (403505802490296).

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

261613652161704 is a wasteful number, since it uses less digits than its factorization.

261613652161704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184755404137 (or 184755404133 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 261613652161704 in words is "two hundred sixty-one trillion, six hundred thirteen billion, six hundred fifty-two million, one hundred sixty-one thousand, seven hundred four".