166441275480 has 32 divisors (see below), whose sum is σ = 499323826800. Its totient is φ = 44384340096.

The previous prime is 166441275467. The next prime is 166441275509. The reversal of 166441275480 is 84572144661.

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, 693505195 + ... + 693505434.

Almost surely, 2^166441275480 is an apocalyptic number.

166441275480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166441275480 is an abundant number, since it is smaller than the sum of its proper divisors (332882551320).

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

166441275480 is a wasteful number, since it uses less digits than its factorization.

166441275480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387010643 (or 1387010639 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 166441275480 in words is "one hundred sixty-six billion, four hundred forty-one million, two hundred seventy-five thousand, four hundred eighty".