20085522579 has 6 divisors (see below), whose sum is σ = 29012421516. Its totient is φ = 13390348380.

The previous prime is 20085522577. The next prime is 20085522599. The reversal of 20085522579 is 97522558002.

20085522579 is a `hidden beast` number, since 2 + 0 + 0 + 8 + 55 + 22 + 579 = 666.

It is not a de Polignac number, because 20085522579 - 2¹ = 20085522577 is a prime.

It is a super-2 number, since 2×20085522579² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20085522577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115862357 + ... + 1115862374.

It is an arithmetic number, because the mean of its divisors is an integer number (4835403586).

Almost surely, 2^20085522579 is an apocalyptic number.

20085522579 is a deficient number, since it is larger than the sum of its proper divisors (8926898937).

20085522579 is a wasteful number, since it uses less digits than its factorization.

20085522579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231724737 (or 2231724734 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 20085522579 in words is "twenty billion, eighty-five million, five hundred twenty-two thousand, five hundred seventy-nine".