20039868654 has 32 divisors (see below), whose sum is σ = 43558801440. Its totient is φ = 6109540992.

The previous prime is 20039868539. The next prime is 20039868679. The reversal of 20039868654 is 45686893002.

It is a junction number, because it is equal to n+sod(n) for n = 20039868597 and 20039868606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1170037 + ... + 1187040.

It is an arithmetic number, because the mean of its divisors is an integer number (1361212545).

Almost surely, 2^20039868654 is an apocalyptic number.

20039868654 is an abundant number, since it is smaller than the sum of its proper divisors (23518932786).

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

20039868654 is a wasteful number, since it uses less digits than its factorization.

20039868654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357204.

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 20039868654 in words is "twenty billion, thirty-nine million, eight hundred sixty-eight thousand, six hundred fifty-four".