20708516576131 has 2 divisors, whose sum is σ = 20708516576132. Its totient is φ = 20708516576130.

The previous prime is 20708516576129. The next prime is 20708516576203. The reversal of 20708516576131 is 13167561580702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20708516576131 - 2¹ = 20708516576129 is a prime.

It is a super-2 number, since 2×20708516576131² (a number of 27 digits) contains 22 as substring.

Together with 20708516576129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20708516576101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10354258288065 + 10354258288066.

It is an arithmetic number, because the mean of its divisors is an integer number (10354258288066).

Almost surely, 2^{20708516576131} is an apocalyptic number.

20708516576131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20708516576131 is an equidigital number, since it uses as much as digits as its factorization.

20708516576131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 20708516576131 in words is "twenty trillion, seven hundred eight billion, five hundred sixteen million, five hundred seventy-six thousand, one hundred thirty-one".