166233740637 has 32 divisors (see below), whose sum is σ = 235550448000. Its totient is φ = 104080128768.

The previous prime is 166233740611. The next prime is 166233740741. The reversal of 166233740637 is 736047332661.

It is not a de Polignac number, because 166233740637 - 2¹⁴ = 166233724253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166233740437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22616239 + ... + 22623587.

It is an arithmetic number, because the mean of its divisors is an integer number (7360951500).

Almost surely, 2^166233740637 is an apocalyptic number.

It is an amenable number.

166233740637 is a deficient number, since it is larger than the sum of its proper divisors (69316707363).

166233740637 is a wasteful number, since it uses less digits than its factorization.

166233740637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14445.

The product of its (nonzero) digits is 2286144, while the sum is 48.

The spelling of 166233740637 in words is "one hundred sixty-six billion, two hundred thirty-three million, seven hundred forty thousand, six hundred thirty-seven".