11272115856 has 40 divisors (see below), whose sum is σ = 29154946464. Its totient is φ = 3752815360.

The previous prime is 11272115851. The next prime is 11272115857. The reversal of 11272115856 is 65851127211.

It is a super-2 number, since 2×11272115856² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11272115851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102285 + ... + 181676.

Almost surely, 2^11272115856 is an apocalyptic number.

11272115856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11272115856 is an abundant number, since it is smaller than the sum of its proper divisors (17882830608).

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

11272115856 is a wasteful number, since it uses less digits than its factorization.

11272115856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284799 (or 284793 counting only the distinct ones).

The product of its digits is 33600, while the sum is 39.

The spelling of 11272115856 in words is "eleven billion, two hundred seventy-two million, one hundred fifteen thousand, eight hundred fifty-six".