11947526556 has 48 divisors (see below), whose sum is σ = 31867153920. Its totient is φ = 3412820160.

The previous prime is 11947526483. The next prime is 11947526581. The reversal of 11947526556 is 65562574911.

It is a super-2 number, since 2×11947526556² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11947526499 and 11947526508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443110 + ... + 469298.

It is an arithmetic number, because the mean of its divisors is an integer number (663899040).

Almost surely, 2^11947526556 is an apocalyptic number.

It is an amenable number.

11947526556 is an abundant number, since it is smaller than the sum of its proper divisors (19919627364).

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

11947526556 is a wasteful number, since it uses less digits than its factorization.

11947526556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31634 (or 31632 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 51.

The spelling of 11947526556 in words is "eleven billion, nine hundred forty-seven million, five hundred twenty-six thousand, five hundred fifty-six".