166051260 has 144 divisors (see below), whose sum is σ = 553512960. Its totient is φ = 40106880.

The previous prime is 166051253. The next prime is 166051289. The reversal of 166051260 is 62150661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77605 + ... + 79715.

It is an arithmetic number, because the mean of its divisors is an integer number (3843840).

Almost surely, 2^166051260 is an apocalyptic number.

166051260 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 166051260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276756480).

166051260 is an abundant number, since it is smaller than the sum of its proper divisors (387461700).

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

166051260 is a wasteful number, since it uses less digits than its factorization.

166051260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 166051260 is about 12886.0878469767. The cubic root of 166051260 is about 549.6430300717.

The spelling of 166051260 in words is "one hundred sixty-six million, fifty-one thousand, two hundred sixty".