261760477007216 has 40 divisors (see below), whose sum is σ = 553268010497664. Its totient is φ = 118981702157760.

The previous prime is 261760477007167. The next prime is 261760477007221. The reversal of 261760477007216 is 612700774067162.

It is a congruent number.

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, 67630685 + ... + 71396291.

Almost surely, 2^{261760477007216} is an apocalyptic number.

It is an amenable number.

261760477007216 is an abundant number, since it is smaller than the sum of its proper divisors (291507533490448).

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

261760477007216 is a wasteful number, since it uses less digits than its factorization.

261760477007216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160589 (or 4160583 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 56.

The spelling of 261760477007216 in words is "two hundred sixty-one trillion, seven hundred sixty billion, four hundred seventy-seven million, seven thousand, two hundred sixteen".