20620013264 has 40 divisors (see below), whose sum is σ = 42681687840. Its totient is φ = 9621583488.

The previous prime is 20620013251. The next prime is 20620013357. The reversal of 20620013264 is 46231002602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485819 + ... + 526554.

It is an arithmetic number, because the mean of its divisors is an integer number (1067042196).

Almost surely, 2^20620013264 is an apocalyptic number.

It is an amenable number.

20620013264 is an abundant number, since it is smaller than the sum of its proper divisors (22061674576).

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

20620013264 is a wasteful number, since it uses less digits than its factorization.

20620013264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012467 (or 1012461 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20620013264 its reverse (46231002602), we get a palindrome (66851015866).

The spelling of 20620013264 in words is "twenty billion, six hundred twenty million, thirteen thousand, two hundred sixty-four".