11656954944 has 504 divisors, whose sum is σ = 38873996928. Its totient is φ = 3448811520.

The previous prime is 11656954931. The next prime is 11656954949. The reversal of 11656954944 is 44945965611.

11656954944 is a `hidden beast` number, since 1 + 1 + 6 + 56 + 9 + 549 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11656954949) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 164182429 + ... + 164182499.

Almost surely, 2^11656954944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11656954944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19436998464).

11656954944 is an abundant number, since it is smaller than the sum of its proper divisors (27217041984).

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

11656954944 is an frugal number, since it uses more digits than its factorization.

11656954944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 116 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 11656954944 in words is "eleven billion, six hundred fifty-six million, nine hundred fifty-four thousand, nine hundred forty-four".