166503944292 has 72 divisors (see below), whose sum is σ = 455104563648. Its totient is φ = 46412209920.

The previous prime is 166503944279. The next prime is 166503944323. The reversal of 166503944292 is 292449305661.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448383 + ... + 730790.

Almost surely, 2^166503944292 is an apocalyptic number.

166503944292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166503944292 is an abundant number, since it is smaller than the sum of its proper divisors (288600619356).

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

166503944292 is a wasteful number, since it uses less digits than its factorization.

166503944292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179269 (or 1179226 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 51.

It can be divided in two parts, 166503 and 944292, that added together give a triangular number (1110795 = T₁₄₉₀).

The spelling of 166503944292 in words is "one hundred sixty-six billion, five hundred three million, nine hundred forty-four thousand, two hundred ninety-two".