11812863400 has 72 divisors (see below), whose sum is σ = 29740191930. Its totient is φ = 4361660160.

The previous prime is 11812863397. The next prime is 11812863463. The reversal of 11812863400 is 436821811.

It can be written as a sum of positive squares in 9 ways, for example, as 87871876 + 11724991524 = 9374^2 + 108282^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 140947 + ... + 208546.

Almost surely, 2^11812863400 is an apocalyptic number.

11812863400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11812863400 is an abundant number, since it is smaller than the sum of its proper divisors (17927328530).

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

11812863400 is a wasteful number, since it uses less digits than its factorization.

11812863400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349535 (or 349513 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 11812863400 in words is "eleven billion, eight hundred twelve million, eight hundred sixty-three thousand, four hundred".