11500000400 has 60 divisors (see below), whose sum is σ = 31575723072. Its totient is φ = 3942856320.

The previous prime is 11500000397. The next prime is 11500000429. The reversal of 11500000400 is 400000511.

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, 2050772 + ... + 2056371.

Almost surely, 2^11500000400 is an apocalyptic number.

11500000400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11500000400 is an abundant number, since it is smaller than the sum of its proper divisors (20075722672).

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

11500000400 is a wasteful number, since it uses less digits than its factorization.

11500000400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107168 (or 4107157 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

Adding to 11500000400 its reverse (400000511), we get a palindrome (11900000911).

The spelling of 11500000400 in words is "eleven billion, five hundred million, four hundred", and thus it is an aban number.