166428419976 has 96 divisors (see below), whose sum is σ = 554761421760. Its totient is φ = 43893207936.

The previous prime is 166428419947. The next prime is 166428419987. The reversal of 166428419976 is 679914824661.

166428419976 is a `hidden beast` number, since 16 + 6 + 428 + 4 + 199 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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, 12694030 + ... + 12707133.

It is an arithmetic number, because the mean of its divisors is an integer number (5778764810).

Almost surely, 2^166428419976 is an apocalyptic number.

It is an amenable number.

166428419976 is an abundant number, since it is smaller than the sum of its proper divisors (388333001784).

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

166428419976 is a wasteful number, since it uses less digits than its factorization.

166428419976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25401195 (or 25401188 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 166428419976 in words is "one hundred sixty-six billion, four hundred twenty-eight million, four hundred nineteen thousand, nine hundred seventy-six".