167856115913 has 2 divisors, whose sum is σ = 167856115914. Its totient is φ = 167856115912.

The previous prime is 167856115909. The next prime is 167856115943. The reversal of 167856115913 is 319511658761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167029150864 + 826965049 = 408692^2 + 28757^2 .

It is a cyclic number.

It is not a de Polignac number, because 167856115913 - 2² = 167856115909 is a prime.

It is not a weakly prime, because it can be changed into another prime (167856115943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83928057956 + 83928057957.

It is an arithmetic number, because the mean of its divisors is an integer number (83928057957).

Almost surely, 2^167856115913 is an apocalyptic number.

It is an amenable number.

167856115913 is a deficient number, since it is larger than the sum of its proper divisors (1).

167856115913 is an equidigital number, since it uses as much as digits as its factorization.

167856115913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 53.

The spelling of 167856115913 in words is "one hundred sixty-seven billion, eight hundred fifty-six million, one hundred fifteen thousand, nine hundred thirteen".