20351870168331 has 16 divisors (see below), whose sum is σ = 29339625288960. Its totient is φ = 12474330468000.

The previous prime is 20351870168299. The next prime is 20351870168341. The reversal of 20351870168331 is 13386107815302.

It is not a de Polignac number, because 20351870168331 - 2⁵ = 20351870168299 is a prime.

It is a super-2 number, since 2×20351870168331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20351870168341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039517751 + ... + 1039537328.

It is an arithmetic number, because the mean of its divisors is an integer number (1833726580560).

Almost surely, 2^{20351870168331} is an apocalyptic number.

20351870168331 is a deficient number, since it is larger than the sum of its proper divisors (8987755120629).

20351870168331 is a wasteful number, since it uses less digits than its factorization.

20351870168331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079055346.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 20351870168331 in words is "twenty trillion, three hundred fifty-one billion, eight hundred seventy million, one hundred sixty-eight thousand, three hundred thirty-one".