166625133480 has 256 divisors, whose sum is σ = 633327206400. Its totient is φ = 38602690560.

The previous prime is 166625133469. The next prime is 166625133487. The reversal of 166625133480 is 84331526661.

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

It is not an unprimeable number, because it can be changed into a prime (166625133487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110376 + ... + 587735.

It is an arithmetic number, because the mean of its divisors is an integer number (2473934400).

Almost surely, 2^166625133480 is an apocalyptic number.

166625133480 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 166625133480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316663603200).

166625133480 is an abundant number, since it is smaller than the sum of its proper divisors (466702072920).

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

166625133480 is a wasteful number, since it uses less digits than its factorization.

166625133480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698161 (or 698151 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 166625133480 in words is "one hundred sixty-six billion, six hundred twenty-five million, one hundred thirty-three thousand, four hundred eighty".