261355008112 has 40 divisors (see below), whose sum is σ = 557477466480. Its totient is φ = 117707834880.

The previous prime is 261355008073. The next prime is 261355008127. The reversal of 261355008112 is 211800553162.

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, 6792613 + ... + 6830980.

It is an arithmetic number, because the mean of its divisors is an integer number (13936936662).

Almost surely, 2^261355008112 is an apocalyptic number.

261355008112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261355008112 is an abundant number, since it is smaller than the sum of its proper divisors (296122458368).

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

261355008112 is a wasteful number, since it uses less digits than its factorization.

261355008112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13623721 (or 13623715 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 261355008112 in words is "two hundred sixty-one billion, three hundred fifty-five million, eight thousand, one hundred twelve".