166400136622560 has 48 divisors (see below), whose sum is σ = 524160430362576. Its totient is φ = 44373369765888.

The previous prime is 166400136622513. The next prime is 166400136622571. The reversal of 166400136622560 is 65226631004661.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173333475169 + ... + 173333476128.

It is an arithmetic number, because the mean of its divisors is an integer number (10920008965887).

Almost surely, 2^{166400136622560} is an apocalyptic number.

166400136622560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166400136622560 is an abundant number, since it is smaller than the sum of its proper divisors (357760293740016).

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

166400136622560 is a wasteful number, since it uses less digits than its factorization.

166400136622560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346666951315 (or 346666951307 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 166400136622560 in words is "one hundred sixty-six trillion, four hundred billion, one hundred thirty-six million, six hundred twenty-two thousand, five hundred sixty".