20612727713 has 12 divisors (see below), whose sum is σ = 21394780092. Its totient is φ = 19856923200.

The previous prime is 20612727703. The next prime is 20612727721. The reversal of 20612727713 is 31772721602.

It can be written as a sum of positive squares in 6 ways, for example, as 16659839329 + 3952888384 = 129073^2 + 62872^2 .

It is not a de Polignac number, because 20612727713 - 2¹⁶ = 20612662177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20612727703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63731 + ... + 212807.

It is an arithmetic number, because the mean of its divisors is an integer number (1782898341).

Almost surely, 2^20612727713 is an apocalyptic number.

It is an amenable number.

20612727713 is a deficient number, since it is larger than the sum of its proper divisors (782052379).

20612727713 is a wasteful number, since it uses less digits than its factorization.

20612727713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149252 (or 149215 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The spelling of 20612727713 in words is "twenty billion, six hundred twelve million, seven hundred twenty-seven thousand, seven hundred thirteen".