13573565215056 has 120 divisors (see below), whose sum is σ = 47360578234944. Its totient is φ = 3525601351680.

The previous prime is 13573565215019. The next prime is 13573565215069. The reversal of 13573565215056 is 65051256537531.

13573565215056 is a `hidden beast` number, since 1 + 3 + 5 + 7 + 3 + 565 + 21 + 5 + 0 + 56 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 13573565214993 and 13573565215011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 612072481 + ... + 612094656.

Almost surely, 2^{13573565215056} is an apocalyptic number.

13573565215056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13573565215056 is an abundant number, since it is smaller than the sum of its proper divisors (33787013019888).

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

13573565215056 is a wasteful number, since it uses less digits than its factorization.

13573565215056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224167169 (or 1224167160 counting only the distinct ones).

The product of its (nonzero) digits is 14175000, while the sum is 54.

The spelling of 13573565215056 in words is "thirteen trillion, five hundred seventy-three billion, five hundred sixty-five million, two hundred fifteen thousand, fifty-six".