166656988080 has 600 divisors, whose sum is σ = 673707567456. Its totient is φ = 38022082560.

The previous prime is 166656988079. The next prime is 166656988103. The reversal of 166656988080 is 80889656661.

It is a junction number, because it is equal to n+sod(n) for n = 166656987999 and 166656988017.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 13323109 + ... + 13335611.

Almost surely, 2^166656988080 is an apocalyptic number.

166656988080 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 166656988080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336853783728).

166656988080 is an abundant number, since it is smaller than the sum of its proper divisors (507050579376).

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

166656988080 is a wasteful number, since it uses less digits than its factorization.

166656988080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12567 (or 12541 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 166656988080 in words is "one hundred sixty-six billion, six hundred fifty-six million, nine hundred eighty-eight thousand, eighty".