166692630731 has 8 divisors (see below), whose sum is σ = 181964377344. Its totient is φ = 151440529320.

The previous prime is 166692630703. The next prime is 166692630743. The reversal of 166692630731 is 137036296661.

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

It is a cyclic number.

It is not a de Polignac number, because 166692630731 - 2⁶ = 166692630667 is a prime.

It is a super-2 number, since 2×166692630731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166692630731.

It is not an unprimeable number, because it can be changed into a prime (166692630031) 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, 4893551 + ... + 4927496.

It is an arithmetic number, because the mean of its divisors is an integer number (22745547168).

Almost surely, 2^166692630731 is an apocalyptic number.

166692630731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166692630731 is a deficient number, since it is larger than the sum of its proper divisors (15271746613).

166692630731 is a wasteful number, since it uses less digits than its factorization.

166692630731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9822601.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 166692630731 in words is "one hundred sixty-six billion, six hundred ninety-two million, six hundred thirty thousand, seven hundred thirty-one".