13215996572544 has 192 divisors, whose sum is σ = 40514326070400. Its totient is φ = 4123189232640.

The previous prime is 13215996572507. The next prime is 13215996572551. The reversal of 13215996572544 is 44527569951231.

13215996572544 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 5 + 9 + 9 + 6 + 572 + 54 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1820652 + ... + 5454059.

It is an arithmetic number, because the mean of its divisors is an integer number (211012114950).

Almost surely, 2^{13215996572544} is an apocalyptic number.

It is an amenable number.

13215996572544 is an abundant number, since it is smaller than the sum of its proper divisors (27298329497856).

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

13215996572544 is a wasteful number, since it uses less digits than its factorization.

13215996572544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7274833 (or 7274818 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 63.

The spelling of 13215996572544 in words is "thirteen trillion, two hundred fifteen billion, nine hundred ninety-six million, five hundred seventy-two thousand, five hundred forty-four".