166389672076967 has 2 divisors, whose sum is σ = 166389672076968. Its totient is φ = 166389672076966.

The previous prime is 166389672076963. The next prime is 166389672077059. The reversal of 166389672076967 is 769670276983661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166389672076967 - 2² = 166389672076963 is a prime.

It is a super-2 number, since 2×166389672076967² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166389672076963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83194836038483 + 83194836038484.

It is an arithmetic number, because the mean of its divisors is an integer number (83194836038484).

Almost surely, 2^{166389672076967} is an apocalyptic number.

166389672076967 is a deficient number, since it is larger than the sum of its proper divisors (1).

166389672076967 is an equidigital number, since it uses as much as digits as its factorization.

166389672076967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10369949184, while the sum is 83.

The spelling of 166389672076967 in words is "one hundred sixty-six trillion, three hundred eighty-nine billion, six hundred seventy-two million, seventy-six thousand, nine hundred sixty-seven".