166459458240 has 280 divisors, whose sum is σ = 593485833600. Its totient is φ = 44287229952.

The previous prime is 166459458239. The next prime is 166459458281. The reversal of 166459458240 is 42854954661.

It is a happy number.

166459458240 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 59 + 4 + 582 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11630929 + ... + 11645231.

Almost surely, 2^166459458240 is an apocalyptic number.

166459458240 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 166459458240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296742916800).

166459458240 is an abundant number, since it is smaller than the sum of its proper divisors (427026375360).

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

166459458240 is a wasteful number, since it uses less digits than its factorization.

166459458240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14781 (or 14762 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 166459458240 in words is "one hundred sixty-six billion, four hundred fifty-nine million, four hundred fifty-eight thousand, two hundred forty".