11855179900 has 36 divisors (see below), whose sum is σ = 25889632888. Its totient is φ = 4711861440.

The previous prime is 11855179877. The next prime is 11855179933. The reversal of 11855179900 is 997155811.

It is a super-2 number, since 2×11855179900² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361854 + ... + 393253.

Almost surely, 2^11855179900 is an apocalyptic number.

11855179900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11855179900 is an abundant number, since it is smaller than the sum of its proper divisors (14034452988).

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

11855179900 is a wasteful number, since it uses less digits than its factorization.

11855179900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755278 (or 755271 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 46.

The spelling of 11855179900 in words is "eleven billion, eight hundred fifty-five million, one hundred seventy-nine thousand, nine hundred".