252606021680 has 120 divisors (see below), whose sum is σ = 603431871936. Its totient is φ = 98340802560.

The previous prime is 252606021677. The next prime is 252606021713. The reversal of 252606021680 is 86120606252.

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, 62262212 + ... + 62266268.

Almost surely, 2^252606021680 is an apocalyptic number.

252606021680 is a gapful number since it is divisible by the number (20) 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 252606021680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301715935968).

252606021680 is an abundant number, since it is smaller than the sum of its proper divisors (350825850256).

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

252606021680 is a wasteful number, since it uses less digits than its factorization.

252606021680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615 (or 4568 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 252606021680 in words is "two hundred fifty-two billion, six hundred six million, twenty-one thousand, six hundred eighty".