166759494720 has 896 divisors, whose sum is σ = 670954045440. Its totient is φ = 34159656960.

The previous prime is 166759494703. The next prime is 166759494739. The reversal of 166759494720 is 27494957661.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 503804955 + ... + 503805285.

It is an arithmetic number, because the mean of its divisors is an integer number (748832640).

Almost surely, 2^166759494720 is an apocalyptic number.

166759494720 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 166759494720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335477022720).

166759494720 is an abundant number, since it is smaller than the sum of its proper divisors (504194550720).

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

166759494720 is a wasteful number, since it uses less digits than its factorization.

166759494720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 166759494720 in words is "one hundred sixty-six billion, seven hundred fifty-nine million, four hundred ninety-four thousand, seven hundred twenty".