11564850403956 has 24 divisors (see below), whose sum is σ = 27915156148320. Its totient is φ = 3722020819552.

The previous prime is 11564850403903. The next prime is 11564850404027. The reversal of 11564850403956 is 65930405846511.

It is a junction number, because it is equal to n+sod(n) for n = 11564850403896 and 11564850403905.

It is a congruent number.

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, 16616164026 + ... + 16616164721.

It is an arithmetic number, because the mean of its divisors is an integer number (1163131506180).

Almost surely, 2^{11564850403956} is an apocalyptic number.

It is an amenable number.

11564850403956 is an abundant number, since it is smaller than the sum of its proper divisors (16350305744364).

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

11564850403956 is a wasteful number, since it uses less digits than its factorization.

11564850403956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33232328783 (or 33232328781 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 57.

The spelling of 11564850403956 in words is "eleven trillion, five hundred sixty-four billion, eight hundred fifty million, four hundred three thousand, nine hundred fifty-six".