20156900713 has 2 divisors, whose sum is σ = 20156900714. Its totient is φ = 20156900712.

The previous prime is 20156900651. The next prime is 20156900761. The reversal of 20156900713 is 31700965102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20156048784 + 851929 = 141972^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 20156900713 - 2¹⁷ = 20156769641 is a prime.

It is not a weakly prime, because it can be changed into another prime (20156903713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10078450356 + 10078450357.

It is an arithmetic number, because the mean of its divisors is an integer number (10078450357).

Almost surely, 2^20156900713 is an apocalyptic number.

It is an amenable number.

20156900713 is a deficient number, since it is larger than the sum of its proper divisors (1).

20156900713 is an equidigital number, since it uses as much as digits as its factorization.

20156900713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The spelling of 20156900713 in words is "twenty billion, one hundred fifty-six million, nine hundred thousand, seven hundred thirteen".