11506896556 has 12 divisors (see below), whose sum is σ = 21321602568. Its totient is φ = 5415010112.

The previous prime is 11506896553. The next prime is 11506896581. The reversal of 11506896556 is 65569860511.

It is a super-2 number, since 2×11506896556² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11506896551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84609466 + ... + 84609601.

It is an arithmetic number, because the mean of its divisors is an integer number (1776800214).

Almost surely, 2^11506896556 is an apocalyptic number.

It is an amenable number.

11506896556 is a deficient number, since it is larger than the sum of its proper divisors (9814706012).

11506896556 is a wasteful number, since it uses less digits than its factorization.

11506896556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169219088 (or 169219086 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 52.

The spelling of 11506896556 in words is "eleven billion, five hundred six million, eight hundred ninety-six thousand, five hundred fifty-six".