11919806256 has 40 divisors (see below), whose sum is σ = 32413510720. Its totient is φ = 3764149056.

The previous prime is 11919806203. The next prime is 11919806263. The reversal of 11919806256 is 65260891911.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 6534070 + ... + 6535893.

It is an arithmetic number, because the mean of its divisors is an integer number (810337768).

Almost surely, 2^11919806256 is an apocalyptic number.

11919806256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11919806256 is an abundant number, since it is smaller than the sum of its proper divisors (20493704464).

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

11919806256 is a wasteful number, since it uses less digits than its factorization.

11919806256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13069993 (or 13069987 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 48.

The spelling of 11919806256 in words is "eleven billion, nine hundred nineteen million, eight hundred six thousand, two hundred fifty-six".