166537888000 has 576 divisors, whose sum is σ = 490004686080. Its totient is φ = 55738368000.

The previous prime is 166537887907. The next prime is 166537888009. The reversal of 166537888000 is 888735661.

It is not an unprimeable number, because it can be changed into a prime (166537888009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 247455664 + ... + 247456336.

It is an arithmetic number, because the mean of its divisors is an integer number (850702580).

Almost surely, 2^166537888000 is an apocalyptic number.

166537888000 is a gapful number since it is divisible by the number (10) 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 166537888000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245002343040).

166537888000 is an abundant number, since it is smaller than the sum of its proper divisors (323466798080).

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

166537888000 is a wasteful number, since it uses less digits than its factorization.

166537888000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 166537888000 in words is "one hundred sixty-six billion, five hundred thirty-seven million, eight hundred eighty-eight thousand".