166042347968 has 56 divisors (see below), whose sum is σ = 377678057952. Its totient is φ = 70949781504.

The previous prime is 166042347959. The next prime is 166042348009. The reversal of 166042347968 is 869743240661.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×166042347968³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398921 + ... + 700872.

Almost surely, 2^166042347968 is an apocalyptic number.

It is an amenable number.

166042347968 is an abundant number, since it is smaller than the sum of its proper divisors (211635709984).

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

166042347968 is a wasteful number, since it uses less digits than its factorization.

166042347968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100149 (or 1100139 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 166042347968 in words is "one hundred sixty-six billion, forty-two million, three hundred forty-seven thousand, nine hundred sixty-eight".