166668140700 has 576 divisors, whose sum is σ = 577763020800. Its totient is φ = 41118105600.

The previous prime is 166668140669. The next prime is 166668140713. The reversal of 166668140700 is 7041866661.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 260012380 + ... + 260013020.

It is an arithmetic number, because the mean of its divisors is an integer number (1003060800).

Almost surely, 2^166668140700 is an apocalyptic number.

166668140700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166668140700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288881510400).

166668140700 is an abundant number, since it is smaller than the sum of its proper divisors (411094880100).

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

166668140700 is a wasteful number, since it uses less digits than its factorization.

166668140700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 166668140700 in words is "one hundred sixty-six billion, six hundred sixty-eight million, one hundred forty thousand, seven hundred".