166667390057 has 8 divisors (see below), whose sum is σ = 201681547776. Its totient is φ = 134454364992.

The previous prime is 166667390047. The next prime is 166667390147. The reversal of 166667390057 is 750093766661.

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 166667390057 - 2⁴ = 166667390041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166667389984 and 166667390011.

It is not an unprimeable number, because it can be changed into a prime (166667390047) 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, 700283033 + ... + 700283270.

It is an arithmetic number, because the mean of its divisors is an integer number (25210193472).

Almost surely, 2^166667390057 is an apocalyptic number.

166667390057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

166667390057 is a deficient number, since it is larger than the sum of its proper divisors (35014157719).

166667390057 is a wasteful number, since it uses less digits than its factorization.

166667390057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400566327.

The product of its (nonzero) digits is 8573040, while the sum is 56.

The spelling of 166667390057 in words is "one hundred sixty-six billion, six hundred sixty-seven million, three hundred ninety thousand, fifty-seven".