166377663875 has 16 divisors (see below), whose sum is σ = 209655256512. Its totient is φ = 131809867200.

The previous prime is 166377663863. The next prime is 166377663883. The reversal of 166377663875 is 578366773661.

It is not a de Polignac number, because 166377663875 - 2¹² = 166377659779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6448394 + ... + 6474143.

It is an arithmetic number, because the mean of its divisors is an integer number (13103453532).

Almost surely, 2^166377663875 is an apocalyptic number.

166377663875 is a deficient number, since it is larger than the sum of its proper divisors (43277592637).

166377663875 is a wasteful number, since it uses less digits than its factorization.

166377663875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12922655 (or 12922645 counting only the distinct ones).

The product of its digits is 160030080, while the sum is 65.

The spelling of 166377663875 in words is "one hundred sixty-six billion, three hundred seventy-seven million, six hundred sixty-three thousand, eight hundred seventy-five".