20396588664145 has 32 divisors (see below), whose sum is σ = 26618063142528. Its totient is φ = 14941257458688.

The previous prime is 20396588664113. The next prime is 20396588664163. The reversal of 20396588664145 is 54146688569302.

It is a cyclic number.

It is not a de Polignac number, because 20396588664145 - 2⁵ = 20396588664113 is a prime.

It is a Duffinian 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, 43428462 + ... + 43895608.

It is an arithmetic number, because the mean of its divisors is an integer number (831814473204).

Almost surely, 2^{20396588664145} is an apocalyptic number.

It is an amenable number.

20396588664145 is a deficient number, since it is larger than the sum of its proper divisors (6221474478383).

20396588664145 is a wasteful number, since it uses less digits than its factorization.

20396588664145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481089.

The product of its (nonzero) digits is 298598400, while the sum is 67.

The spelling of 20396588664145 in words is "twenty trillion, three hundred ninety-six billion, five hundred eighty-eight million, six hundred sixty-four thousand, one hundred forty-five".