261910195232 has 48 divisors (see below), whose sum is σ = 591078462912. Its totient is φ = 111908079360.

The previous prime is 261910195231. The next prime is 261910195237. The reversal of 261910195232 is 232591019162.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 261910195232.

It is not an unprimeable number, because it can be changed into a prime (261910195231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692083 + ... + 1840370.

It is an arithmetic number, because the mean of its divisors is an integer number (12314134644).

Almost surely, 2^261910195232 is an apocalyptic number.

It is an amenable number.

261910195232 is an abundant number, since it is smaller than the sum of its proper divisors (329168267680).

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

261910195232 is a wasteful number, since it uses less digits than its factorization.

261910195232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532801 (or 3532793 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 261910195232 in words is "two hundred sixty-one billion, nine hundred ten million, one hundred ninety-five thousand, two hundred thirty-two".