166236633664 has 112 divisors (see below), whose sum is σ = 338453821440. Its totient is φ = 80991334400.

The previous prime is 166236633659. The next prime is 166236633701. The reversal of 166236633664 is 466336632661.

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, 205483692 + ... + 205484500.

It is an arithmetic number, because the mean of its divisors is an integer number (3021909120).

Almost surely, 2^166236633664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166236633664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169226910720).

166236633664 is an abundant number, since it is smaller than the sum of its proper divisors (172217187776).

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

166236633664 is a wasteful number, since it uses less digits than its factorization.

166236633664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388 (or 1378 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 52.

The spelling of 166236633664 in words is "one hundred sixty-six billion, two hundred thirty-six million, six hundred thirty-three thousand, six hundred sixty-four".