20620222645615 has 32 divisors (see below), whose sum is σ = 26588375331840. Its totient is φ = 15305806656000.

The previous prime is 20620222645567. The next prime is 20620222645669. The reversal of 20620222645615 is 51654622202602.

It is not a de Polignac number, because 20620222645615 - 2²³ = 20620214257007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9104394 + ... + 11141383.

It is an arithmetic number, because the mean of its divisors is an integer number (830886729120).

Almost surely, 2^{20620222645615} is an apocalyptic number.

20620222645615 is a deficient number, since it is larger than the sum of its proper divisors (5968152686225).

20620222645615 is a wasteful number, since it uses less digits than its factorization.

20620222645615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20246023.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 20620222645615 in words is "twenty trillion, six hundred twenty billion, two hundred twenty-two million, six hundred forty-five thousand, six hundred fifteen".