167666412751 has 2 divisors, whose sum is σ = 167666412752. Its totient is φ = 167666412750.

The previous prime is 167666412721. The next prime is 167666412787. The reversal of 167666412751 is 157214666761.

It is a weak prime.

It is an emirp because it is prime and its reverse (157214666761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167666412751 - 2²⁵ = 167632858319 is a prime.

It is a super-2 number, since 2×167666412751² (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 (167666412721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83833206375 + 83833206376.

It is an arithmetic number, because the mean of its divisors is an integer number (83833206376).

Almost surely, 2^167666412751 is an apocalyptic number.

167666412751 is a deficient number, since it is larger than the sum of its proper divisors (1).

167666412751 is an equidigital number, since it uses as much as digits as its factorization.

167666412751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 52.

The spelling of 167666412751 in words is "one hundred sixty-seven billion, six hundred sixty-six million, four hundred twelve thousand, seven hundred fifty-one".