31439651045166 has 144 divisors (see below), whose sum is σ = 87642580544064. Its totient is φ = 8067673934208.

The previous prime is 31439651045141. The next prime is 31439651045189. The reversal of 31439651045166 is 66154015693413.

31439651045166 is a `hidden beast` number, since 3 + 1 + 4 + 396 + 51 + 0 + 45 + 166 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 36629670 + ... + 37478153.

It is an arithmetic number, because the mean of its divisors is an integer number (608629031556).

Almost surely, 2^{31439651045166} is an apocalyptic number.

31439651045166 is an abundant number, since it is smaller than the sum of its proper divisors (56202929498898).

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

31439651045166 is a wasteful number, since it uses less digits than its factorization.

31439651045166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74107895 (or 74107885 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 31439651045166 in words is "thirty-one trillion, four hundred thirty-nine billion, six hundred fifty-one million, forty-five thousand, one hundred sixty-six".