20749676586 has 64 divisors (see below), whose sum is σ = 43993497600. Its totient is φ = 6515308800.

The previous prime is 20749676551. The next prime is 20749676659. The reversal of 20749676586 is 68567694702.

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, 1033330 + ... + 1053218.

It is an arithmetic number, because the mean of its divisors is an integer number (687398400).

Almost surely, 2^20749676586 is an apocalyptic number.

20749676586 is an abundant number, since it is smaller than the sum of its proper divisors (23243821014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20749676586 is a wasteful number, since it uses less digits than its factorization.

20749676586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20075.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 20749676586 in words is "twenty billion, seven hundred forty-nine million, six hundred seventy-six thousand, five hundred eighty-six".