166125604537 has 8 divisors (see below), whose sum is σ = 169406562240. Its totient is φ = 162870790320.

The previous prime is 166125604531. The next prime is 166125604543. The reversal of 166125604537 is 735406521661.

It is an interprime number because it is at equal distance from previous prime (166125604531) and next prime (166125604543).

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 166125604537 - 2³ = 166125604529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166125604531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6523038 + ... + 6548455.

It is an arithmetic number, because the mean of its divisors is an integer number (21175820280).

Almost surely, 2^166125604537 is an apocalyptic number.

It is an amenable number.

166125604537 is a deficient number, since it is larger than the sum of its proper divisors (3280957703).

166125604537 is a wasteful number, since it uses less digits than its factorization.

166125604537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13071743.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 166125604537 in words is "one hundred sixty-six billion, one hundred twenty-five million, six hundred four thousand, five hundred thirty-seven".