166434999516 has 36 divisors (see below), whose sum is σ = 420793633624. Its totient is φ = 55467396000.

The previous prime is 166434999503. The next prime is 166434999529. The reversal of 166434999516 is 615999434661.

166434999516 is a `hidden beast` number, since 1 + 6 + 6 + 43 + 499 + 95 + 16 = 666.

It is an interprime number because it is at equal distance from previous prime (166434999503) and next prime (166434999529).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269530 + ... + 636801.

Almost surely, 2^166434999516 is an apocalyptic number.

It is an amenable number.

166434999516 is an abundant number, since it is smaller than the sum of its proper divisors (254358634108).

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

166434999516 is a wasteful number, since it uses less digits than its factorization.

166434999516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911442 (or 911437 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The spelling of 166434999516 in words is "one hundred sixty-six billion, four hundred thirty-four million, nine hundred ninety-nine thousand, five hundred sixteen".