20636433167331 has 32 divisors (see below), whose sum is σ = 28007681679360. Its totient is φ = 13512082147200.

The previous prime is 20636433167327. The next prime is 20636433167353. The reversal of 20636433167331 is 13376133463602.

It is not a de Polignac number, because 20636433167331 - 2² = 20636433167327 is a prime.

It is a super-2 number, since 2×20636433167331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20636433167321) 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, 464940366 + ... + 464984748.

It is an arithmetic number, because the mean of its divisors is an integer number (875240052480).

Almost surely, 2^{20636433167331} is an apocalyptic number.

20636433167331 is a deficient number, since it is larger than the sum of its proper divisors (7371248512029).

20636433167331 is a wasteful number, since it uses less digits than its factorization.

20636433167331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48147.

The product of its (nonzero) digits is 2939328, while the sum is 48.

The spelling of 20636433167331 in words is "twenty trillion, six hundred thirty-six billion, four hundred thirty-three million, one hundred sixty-seven thousand, three hundred thirty-one".