261092272892 has 24 divisors (see below), whose sum is σ = 511920479280. Its totient is φ = 115470783360.

The previous prime is 261092272891. The next prime is 261092272901. The reversal of 261092272892 is 298272290162.

It is a self number, because there is not a number n which added to its sum of digits gives 261092272892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261092272891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80186417 + ... + 80189672.

It is an arithmetic number, because the mean of its divisors is an integer number (21330019970).

Almost surely, 2^261092272892 is an apocalyptic number.

261092272892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261092272892 is a deficient number, since it is larger than the sum of its proper divisors (250828206388).

261092272892 is a wasteful number, since it uses less digits than its factorization.

261092272892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160376141 (or 160376139 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 261092272892 in words is "two hundred sixty-one billion, ninety-two million, two hundred seventy-two thousand, eight hundred ninety-two".