166613416662 has 128 divisors (see below), whose sum is σ = 436682907648. Its totient is φ = 41092128000.

The previous prime is 166613416657. The next prime is 166613416681. The reversal of 166613416662 is 266614316661.

It is a super-2 number, since 2×166613416662² (a number of 23 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 63 ways as a sum of consecutive naturals, for example, 1398537 + ... + 1512987.

It is an arithmetic number, because the mean of its divisors is an integer number (3411585216).

Almost surely, 2^166613416662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166613416662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218341453824).

166613416662 is an abundant number, since it is smaller than the sum of its proper divisors (270069490986).

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

166613416662 is a wasteful number, since it uses less digits than its factorization.

166613416662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114634.

The product of its digits is 1119744, while the sum is 48.

The spelling of 166613416662 in words is "one hundred sixty-six billion, six hundred thirteen million, four hundred sixteen thousand, six hundred sixty-two".