166616067752 has 8 divisors (see below), whose sum is σ = 312405127050. Its totient is φ = 83308033872.

The previous prime is 166616067733. The next prime is 166616067769. The reversal of 166616067752 is 257760616661.

It can be written as a sum of positive squares in only one way, i.e., 165611558116 + 1004509636 = 406954^2 + 31694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 166616067694 and 166616067703.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10413504227 + ... + 10413504242.

Almost surely, 2^166616067752 is an apocalyptic number.

It is an amenable number.

166616067752 is a deficient number, since it is larger than the sum of its proper divisors (145789059298).

166616067752 is a wasteful number, since it uses less digits than its factorization.

166616067752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20827008475 (or 20827008471 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 166616067752 in words is "one hundred sixty-six billion, six hundred sixteen million, sixty-seven thousand, seven hundred fifty-two".