261094190492 has 48 divisors (see below), whose sum is σ = 475800696000. Its totient is φ = 125212792320.

The previous prime is 261094190473. The next prime is 261094190501. The reversal of 261094190492 is 294091490162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15065192 + ... + 15082512.

It is an arithmetic number, because the mean of its divisors is an integer number (9912514500).

Almost surely, 2^261094190492 is an apocalyptic number.

It is an amenable number.

261094190492 is a deficient number, since it is larger than the sum of its proper divisors (214706505508).

261094190492 is a wasteful number, since it uses less digits than its factorization.

261094190492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18206 (or 18204 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 261094190492 in words is "two hundred sixty-one billion, ninety-four million, one hundred ninety thousand, four hundred ninety-two".