166038939546 has 32 divisors (see below), whose sum is σ = 343929067200. Its totient is φ = 53375562240.

The previous prime is 166038939511. The next prime is 166038939589. The reversal of 166038939546 is 645939830661.

166038939546 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166038939546² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166038939546.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405975 + ... + 704906.

It is an arithmetic number, because the mean of its divisors is an integer number (10747783350).

Almost surely, 2^166038939546 is an apocalyptic number.

166038939546 is an abundant number, since it is smaller than the sum of its proper divisors (177890127654).

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

166038939546 is a wasteful number, since it uses less digits than its factorization.

166038939546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111774.

The product of its (nonzero) digits is 25194240, while the sum is 60.

The spelling of 166038939546 in words is "one hundred sixty-six billion, thirty-eight million, nine hundred thirty-nine thousand, five hundred forty-six".