167620420831 has 2 divisors, whose sum is σ = 167620420832. Its totient is φ = 167620420830.

The previous prime is 167620420769. The next prime is 167620420843. The reversal of 167620420831 is 138024026761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 167620420831 - 2¹⁵ = 167620388063 is a prime.

It is a super-2 number, since 2×167620420831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167620420861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83810210415 + 83810210416.

It is an arithmetic number, because the mean of its divisors is an integer number (83810210416).

Almost surely, 2^167620420831 is an apocalyptic number.

167620420831 is a deficient number, since it is larger than the sum of its proper divisors (1).

167620420831 is an equidigital number, since it uses as much as digits as its factorization.

167620420831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 167620420831 in words is "one hundred sixty-seven billion, six hundred twenty million, four hundred twenty thousand, eight hundred thirty-one".