11175815856 has 40 divisors (see below), whose sum is σ = 29344158064. Its totient is φ = 3664200960.

The previous prime is 11175815843. The next prime is 11175815879. The reversal of 11175815856 is 65851857111.

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, 1905511 + ... + 1911366.

Almost surely, 2^11175815856 is an apocalyptic number.

11175815856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11175815856 is an abundant number, since it is smaller than the sum of its proper divisors (18168342208).

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

11175815856 is a wasteful number, since it uses less digits than its factorization.

11175815856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816949 (or 3816943 counting only the distinct ones).

The product of its digits is 336000, while the sum is 48.

The spelling of 11175815856 in words is "eleven billion, one hundred seventy-five million, eight hundred fifteen thousand, eight hundred fifty-six".