166614820380 has 72 divisors (see below), whose sum is σ = 505467026064. Its totient is φ = 44424576000.

The previous prime is 166614820369. The next prime is 166614820409. The reversal of 166614820380 is 83028416661.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1352355 + ... + 1470405.

It is an arithmetic number, because the mean of its divisors is an integer number (7020375362).

Almost surely, 2^166614820380 is an apocalyptic number.

166614820380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166614820380 is an abundant number, since it is smaller than the sum of its proper divisors (338852205684).

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

166614820380 is a wasteful number, since it uses less digits than its factorization.

166614820380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125907 (or 125902 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 166614820380 in words is "one hundred sixty-six billion, six hundred fourteen million, eight hundred twenty thousand, three hundred eighty".