166304554332 has 24 divisors (see below), whose sum is σ = 443478811776. Its totient is φ = 47515586928.

The previous prime is 166304554327. The next prime is 166304554349. The reversal of 166304554332 is 233455403661.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 989907978 + ... + 989908145.

It is an arithmetic number, because the mean of its divisors is an integer number (18478283824).

Almost surely, 2^166304554332 is an apocalyptic number.

166304554332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166304554332 is an abundant number, since it is smaller than the sum of its proper divisors (277174257444).

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

166304554332 is a wasteful number, since it uses less digits than its factorization.

166304554332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979816137 (or 1979816135 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

Adding to 166304554332 its reverse (233455403661), we get a palindrome (399759957993).

The spelling of 166304554332 in words is "one hundred sixty-six billion, three hundred four million, five hundred fifty-four thousand, three hundred thirty-two".