20715717104 has 20 divisors (see below), whose sum is σ = 40425459480. Its totient is φ = 10283340480.

The previous prime is 20715717097. The next prime is 20715717161. The reversal of 20715717104 is 40171751702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4655087 + ... + 4659534.

It is an arithmetic number, because the mean of its divisors is an integer number (2021272974).

Almost surely, 2^20715717104 is an apocalyptic number.

It is an amenable number.

20715717104 is a deficient number, since it is larger than the sum of its proper divisors (19709742376).

20715717104 is a wasteful number, since it uses less digits than its factorization.

20715717104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9314768 (or 9314762 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 35.

It can be divided in two parts, 2071 and 5717104, that added together give a palindrome (5719175).

The spelling of 20715717104 in words is "twenty billion, seven hundred fifteen million, seven hundred seventeen thousand, one hundred four".