166907557952 has 14 divisors (see below), whose sum is σ = 331207185438. Its totient is φ = 83453778944.

The previous prime is 166907557913. The next prime is 166907557987. The reversal of 166907557952 is 259755709661.

It can be written as a sum of positive squares in only one way, i.e., 161977271296 + 4930286656 = 402464^2 + 70216^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303965233 + ... + 1303965360.

Almost surely, 2^166907557952 is an apocalyptic number.

It is an amenable number.

166907557952 is a deficient number, since it is larger than the sum of its proper divisors (164299627486).

166907557952 is an equidigital number, since it uses as much as digits as its factorization.

166907557952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607930605 (or 2607930595 counting only the distinct ones).

The product of its (nonzero) digits is 35721000, while the sum is 62.

The spelling of 166907557952 in words is "one hundred sixty-six billion, nine hundred seven million, five hundred fifty-seven thousand, nine hundred fifty-two".