166672681344 has 224 divisors, whose sum is σ = 536136174000. Its totient is φ = 51283528704.

The previous prime is 166672681333. The next prime is 166672681381. The reversal of 166672681344 is 443186276661.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1144357 + ... + 1281755.

Almost surely, 2^166672681344 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 166672681344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268068087000).

166672681344 is an abundant number, since it is smaller than the sum of its proper divisors (369463492656).

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

166672681344 is an equidigital number, since it uses as much as digits as its factorization.

166672681344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137444 (or 137417 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 166672681344 in words is "one hundred sixty-six billion, six hundred seventy-two million, six hundred eighty-one thousand, three hundred forty-four".