166616595630 has 96 divisors (see below), whose sum is σ = 454564431360. Its totient is φ = 42261785280.

The previous prime is 166616595617. The next prime is 166616595643. The reversal of 166616595630 is 36595616661.

It is an interprime number because it is at equal distance from previous prime (166616595617) and next prime (166616595643).

It is a super-2 number, since 2×166616595630² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145695 + ... + 595365.

It is an arithmetic number, because the mean of its divisors is an integer number (4735046160).

Almost surely, 2^166616595630 is an apocalyptic number.

166616595630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166616595630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227282215680).

166616595630 is an abundant number, since it is smaller than the sum of its proper divisors (287947835730).

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

166616595630 is a wasteful number, since it uses less digits than its factorization.

166616595630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449886 (or 449883 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 166616595630 in words is "one hundred sixty-six billion, six hundred sixteen million, five hundred ninety-five thousand, six hundred thirty".