261713861922 has 16 divisors (see below), whose sum is σ = 525317357952. Its totient is φ = 86923014960.

The previous prime is 261713861891. The next prime is 261713861963. The reversal of 261713861922 is 229168317162.

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, 78732954 + ... + 78736277.

It is an arithmetic number, because the mean of its divisors is an integer number (32832334872).

Almost surely, 2^261713861922 is an apocalyptic number.

261713861922 is an abundant number, since it is smaller than the sum of its proper divisors (263603496030).

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

261713861922 is a wasteful number, since it uses less digits than its factorization.

261713861922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157469513.

The product of its digits is 435456, while the sum is 48.

The spelling of 261713861922 in words is "two hundred sixty-one billion, seven hundred thirteen million, eight hundred sixty-one thousand, nine hundred twenty-two".