166025476400 has 120 divisors (see below), whose sum is σ = 457213816800. Its totient is φ = 56753786880.

The previous prime is 166025476391. The next prime is 166025476417. The reversal of 166025476400 is 4674520661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 855626 + ... + 1031574.

It is an arithmetic number, because the mean of its divisors is an integer number (3810115140).

Almost surely, 2^166025476400 is an apocalyptic number.

166025476400 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 166025476400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228606908400).

166025476400 is an abundant number, since it is smaller than the sum of its proper divisors (291188340400).

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

166025476400 is a wasteful number, since it uses less digits than its factorization.

166025476400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176311 (or 176300 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 166025476400 in words is "one hundred sixty-six billion, twenty-five million, four hundred seventy-six thousand, four hundred".