20716311707 has 32 divisors (see below), whose sum is σ = 27050889600. Its totient is φ = 15395862528.

The previous prime is 20716311691. The next prime is 20716311727. The reversal of 20716311707 is 70711361702.

It is a cyclic number.

It is not a de Polignac number, because 20716311707 - 2⁴ = 20716311691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20716311727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 774269 + ... + 800577.

It is an arithmetic number, because the mean of its divisors is an integer number (845340300).

Almost surely, 2^20716311707 is an apocalyptic number.

20716311707 is a deficient number, since it is larger than the sum of its proper divisors (6334577893).

20716311707 is a wasteful number, since it uses less digits than its factorization.

20716311707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26855.

The product of its (nonzero) digits is 12348, while the sum is 35.

The spelling of 20716311707 in words is "twenty billion, seven hundred sixteen million, three hundred eleven thousand, seven hundred seven".