166940767267 has 8 divisors (see below), whose sum is σ = 174637859616. Its totient is φ = 159280241472.

The previous prime is 166940767243. The next prime is 166940767283. The reversal of 166940767267 is 762767049661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166940767267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166940767207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9132298 + ... + 9150559.

It is an arithmetic number, because the mean of its divisors is an integer number (21829732452).

Almost surely, 2^166940767267 is an apocalyptic number.

166940767267 is a deficient number, since it is larger than the sum of its proper divisors (7697092349).

166940767267 is a wasteful number, since it uses less digits than its factorization.

166940767267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18283277.

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 166940767267 in words is "one hundred sixty-six billion, nine hundred forty million, seven hundred sixty-seven thousand, two hundred sixty-seven".