166751355904 has 99 divisors (see below), whose sum is σ = 387975526887. Its totient is φ = 71425665024.

The previous prime is 166751355893. The next prime is 166751355943. The reversal of 166751355904 is 409553157661.

The square root of 166751355904 is 408352.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 91469937 + ... + 91471759.

Almost surely, 2^166751355904 is an apocalyptic number.

166751355904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166751355904 is the 408352-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166751355904

166751355904 is an abundant number, since it is smaller than the sum of its proper divisors (221224170983).

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

166751355904 is an frugal number, since it uses more digits than its factorization.

166751355904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 166751355904 in words is "one hundred sixty-six billion, seven hundred fifty-one million, three hundred fifty-five thousand, nine hundred four".