166640154060 has 96 divisors (see below), whose sum is σ = 477563708160. Its totient is φ = 43393012992.

The previous prime is 166640154059. The next prime is 166640154073. The reversal of 166640154060 is 60451046661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17717319 + ... + 17726721.

It is an arithmetic number, because the mean of its divisors is an integer number (4974621960).

Almost surely, 2^166640154060 is an apocalyptic number.

166640154060 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 166640154060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238781854080).

166640154060 is an abundant number, since it is smaller than the sum of its proper divisors (310923554100).

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

166640154060 is a wasteful number, since it uses less digits than its factorization.

166640154060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16327 (or 16325 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 166640154060 in words is "one hundred sixty-six billion, six hundred forty million, one hundred fifty-four thousand, sixty".