166215354625344 has 112 divisors (see below), whose sum is σ = 466421847626880. Its totient is φ = 52127409776640.

The previous prime is 166215354625303. The next prime is 166215354625357. The reversal of 166215354625344 is 443526453512661.

It is a super-2 number, since 2×166215354625344² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 308249859 + ... + 308788610.

Almost surely, 2^{166215354625344} is an apocalyptic number.

It is an amenable number.

166215354625344 is an abundant number, since it is smaller than the sum of its proper divisors (300206493001536).

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

166215354625344 is a wasteful number, since it uses less digits than its factorization.

166215354625344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617038568 (or 617038558 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 57.

The spelling of 166215354625344 in words is "one hundred sixty-six trillion, two hundred fifteen billion, three hundred fifty-four million, six hundred twenty-five thousand, three hundred forty-four".