11111117900 has 36 divisors (see below), whose sum is σ = 24284617560. Its totient is φ = 4412467200.

The previous prime is 11111117813. The next prime is 11111117921. The reversal of 11111117900 is 971111111.

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, 385781 + ... + 413580.

It is an arithmetic number, because the mean of its divisors is an integer number (674572710).

Almost surely, 2^11111117900 is an apocalyptic number.

11111117900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111117900 is an abundant number, since it is smaller than the sum of its proper divisors (13173499660).

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

11111117900 is a wasteful number, since it uses less digits than its factorization.

11111117900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799514 (or 799507 counting only the distinct ones).

The product of its (nonzero) digits is 63, while the sum is 23.

The spelling of 11111117900 in words is "eleven billion, one hundred eleven million, one hundred seventeen thousand, nine hundred".