164456486388 has 72 divisors (see below), whose sum is σ = 454361806080. Its totient is φ = 49929857280.

The previous prime is 164456486377. The next prime is 164456486401. The reversal of 164456486388 is 883684654461.

It is a happy number.

164456486388 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 564 + 8 + 63 + 8 + 8 = 666.

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, 4315218 + ... + 4353161.

It is an arithmetic number, because the mean of its divisors is an integer number (6310580640).

Almost surely, 2^164456486388 is an apocalyptic number.

164456486388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164456486388 is an abundant number, since it is smaller than the sum of its proper divisors (289905319692).

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

164456486388 is a wasteful number, since it uses less digits than its factorization.

164456486388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8668437 (or 8668432 counting only the distinct ones).

The product of its digits is 106168320, while the sum is 63.

The spelling of 164456486388 in words is "one hundred sixty-four billion, four hundred fifty-six million, four hundred eighty-six thousand, three hundred eighty-eight".