166550896512 has 1152 divisors, whose sum is σ = 670442572800. Its totient is φ = 38993633280.

The previous prime is 166550896493. The next prime is 166550896583. The reversal of 166550896512 is 215698055661.

166550896512 is a `hidden beast` number, since 1 + 6 + 6 + 550 + 89 + 6 + 5 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a super-2 number, since 2×166550896512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 379386789 + ... + 379387227.

It is an arithmetic number, because the mean of its divisors is an integer number (581981400).

Almost surely, 2^166550896512 is an apocalyptic number.

166550896512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166550896512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335221286400).

166550896512 is an abundant number, since it is smaller than the sum of its proper divisors (503891676288).

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

166550896512 is a wasteful number, since it uses less digits than its factorization.

166550896512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 54.

The spelling of 166550896512 in words is "one hundred sixty-six billion, five hundred fifty million, eight hundred ninety-six thousand, five hundred twelve".