166251390392 has 16 divisors (see below), whose sum is σ = 311727672960. Its totient is φ = 83124010944.

The previous prime is 166251390379. The next prime is 166251390419. The reversal of 166251390392 is 293093152661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274793 + ... + 638759.

It is an arithmetic number, because the mean of its divisors is an integer number (19482979560).

Almost surely, 2^166251390392 is an apocalyptic number.

It is an amenable number.

166251390392 is a deficient number, since it is larger than the sum of its proper divisors (145476282568).

166251390392 is a wasteful number, since it uses less digits than its factorization.

166251390392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421070 (or 421066 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 47.

The spelling of 166251390392 in words is "one hundred sixty-six billion, two hundred fifty-one million, three hundred ninety thousand, three hundred ninety-two".