166391514037 has 8 divisors (see below), whose sum is σ = 193749687936. Its totient is φ = 139930329552.

The previous prime is 166391513993. The next prime is 166391514083. The reversal of 166391514037 is 730415193661.

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-166391514037 is a prime.

It is a super-2 number, since 2×166391514037² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166391514097) 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, 224246953 + ... + 224247694.

It is an arithmetic number, because the mean of its divisors is an integer number (24218710992).

Almost surely, 2^166391514037 is an apocalyptic number.

It is an amenable number.

166391514037 is a deficient number, since it is larger than the sum of its proper divisors (27358173899).

166391514037 is an equidigital number, since it uses as much as digits as its factorization.

166391514037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448494707.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 166391514037 in words is "one hundred sixty-six billion, three hundred ninety-one million, five hundred fourteen thousand, thirty-seven".