166703668352 has 64 divisors (see below), whose sum is σ = 358248743160. Its totient is φ = 76811673600.

The previous prime is 166703668333. The next prime is 166703668379. The reversal of 166703668352 is 253866307661.

It can be written as a sum of positive squares in 4 ways, for example, as 115746926656 + 50956741696 = 340216^2 + 225736^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×166703668352² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166703668294 and 166703668303.

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, 916718 + ... + 1083410.

Almost surely, 2^166703668352 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 166703668352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179124371580).

166703668352 is an abundant number, since it is smaller than the sum of its proper divisors (191545074808).

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

166703668352 is a wasteful number, since it uses less digits than its factorization.

166703668352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167321 (or 167309 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 166703668352 in words is "one hundred sixty-six billion, seven hundred three million, six hundred sixty-eight thousand, three hundred fifty-two".