261593275480 has 32 divisors (see below), whose sum is σ = 588766209840. Its totient is φ = 104605072000.

The previous prime is 261593275457. The next prime is 261593275511. The reversal of 261593275480 is 84572395162.

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, 875779 + ... + 1135858.

It is a 1-persistent number, because it is pandigital, but 2⋅261593275480 = 523186550960 is not.

Almost surely, 2^261593275480 is an apocalyptic number.

261593275480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261593275480 is an abundant number, since it is smaller than the sum of its proper divisors (327172934360).

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

261593275480 is a wasteful number, since it uses less digits than its factorization.

261593275480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014899 (or 2014895 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 261593275480 in words is "two hundred sixty-one billion, five hundred ninety-three million, two hundred seventy-five thousand, four hundred eighty".