166250966238 has 48 divisors (see below), whose sum is σ = 429764409360. Its totient is φ = 47500275312.

The previous prime is 166250966227. The next prime is 166250966249. The reversal of 166250966238 is 832669052661.

166250966238 is a `hidden beast` number, since 1 + 6 + 6 + 2 + 5 + 0 + 9 + 6 + 623 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (166250966227) and next prime (166250966249).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31412881 + ... + 31418172.

It is an arithmetic number, because the mean of its divisors is an integer number (8953425195).

Almost surely, 2^166250966238 is an apocalyptic number.

166250966238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166250966238 is an abundant number, since it is smaller than the sum of its proper divisors (263513443122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166250966238 is a wasteful number, since it uses less digits than its factorization.

166250966238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62831078 (or 62831065 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 166250966238 in words is "one hundred sixty-six billion, two hundred fifty million, nine hundred sixty-six thousand, two hundred thirty-eight".