20431525879 has 8 divisors (see below), whose sum is σ = 20523396240. Its totient is φ = 20339860800.

The previous prime is 20431525847. The next prime is 20431525883. The reversal of 20431525879 is 97852513402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20431525879 - 2⁵ = 20431525847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431525889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149949 + ... + 251689.

It is an arithmetic number, because the mean of its divisors is an integer number (2565424530).

Almost surely, 2^20431525879 is an apocalyptic number.

20431525879 is a deficient number, since it is larger than the sum of its proper divisors (91870361).

20431525879 is a wasteful number, since it uses less digits than its factorization.

20431525879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102641.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 20431525879 in words is "twenty billion, four hundred thirty-one million, five hundred twenty-five thousand, eight hundred seventy-nine".