20646514626 has 8 divisors (see below), whose sum is σ = 41293029264. Its totient is φ = 6882171540.

The previous prime is 20646514619. The next prime is 20646514639. The reversal of 20646514626 is 62641564602.

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

20646514626 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720542880 + ... + 1720542891.

It is an arithmetic number, because the mean of its divisors is an integer number (5161628658).

Almost surely, 2^20646514626 is an apocalyptic number.

20646514626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20646514626 is a wasteful number, since it uses less digits than its factorization.

20646514626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441085776.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 20646514626 in words is "twenty billion, six hundred forty-six million, five hundred fourteen thousand, six hundred twenty-six".