20582496979 has 32 divisors (see below), whose sum is σ = 24096268800. Its totient is φ = 17395656960.

The previous prime is 20582496971. The next prime is 20582496997. The reversal of 20582496979 is 97969428502.

It is not a de Polignac number, because 20582496979 - 2³ = 20582496971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20582496971) 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, 1320757 + ... + 1336249.

It is an arithmetic number, because the mean of its divisors is an integer number (753008400).

Almost surely, 2^20582496979 is an apocalyptic number.

20582496979 is a deficient number, since it is larger than the sum of its proper divisors (3513771821).

20582496979 is a wasteful number, since it uses less digits than its factorization.

20582496979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15675.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 20582496979 in words is "twenty billion, five hundred eighty-two million, four hundred ninety-six thousand, nine hundred seventy-nine".