20715717130 has 8 divisors (see below), whose sum is σ = 37288290852. Its totient is φ = 8286286848.

The previous prime is 20715717097. The next prime is 20715717161. The reversal of 20715717130 is 3171751702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17328826321 + 3386890809 = 131639^2 + 58197^2 .

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

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, 1035785847 + ... + 1035785866.

Almost surely, 2^20715717130 is an apocalyptic number.

20715717130 is a deficient number, since it is larger than the sum of its proper divisors (16572573722).

20715717130 is a wasteful number, since it uses less digits than its factorization.

20715717130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071571720.

The product of its (nonzero) digits is 10290, while the sum is 34.

The spelling of 20715717130 in words is "twenty billion, seven hundred fifteen million, seven hundred seventeen thousand, one hundred thirty".