20117563370513 has 32 divisors (see below), whose sum is σ = 23220797376000. Its totient is φ = 17072482752000.

The previous prime is 20117563370507. The next prime is 20117563370533. The reversal of 20117563370513 is 31507336571102.

It is a cyclic number.

It is not a de Polignac number, because 20117563370513 - 2⁶ = 20117563370449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20117563370533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031607263 + ... + 1031626763.

It is an arithmetic number, because the mean of its divisors is an integer number (725649918000).

Almost surely, 2^{20117563370513} is an apocalyptic number.

It is an amenable number.

20117563370513 is a deficient number, since it is larger than the sum of its proper divisors (3103234005487).

20117563370513 is a wasteful number, since it uses less digits than its factorization.

20117563370513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22977.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 20117563370513 in words is "twenty trillion, one hundred seventeen billion, five hundred sixty-three million, three hundred seventy thousand, five hundred thirteen".