252861953472 has 140 divisors (see below), whose sum is σ = 750224439096. Its totient is φ = 84212835840.

The previous prime is 252861953467. The next prime is 252861953507. The reversal of 252861953472 is 274359168252.

252861953472 is a `hidden beast` number, since 2 + 5 + 2 + 86 + 1 + 95 + 3 + 472 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6008022 + ... + 6049962.

Almost surely, 2^252861953472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252861953472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375112219548).

252861953472 is an abundant number, since it is smaller than the sum of its proper divisors (497362485624).

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

252861953472 is a wasteful number, since it uses less digits than its factorization.

252861953472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43128 (or 43109 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 252861953472 in words is "two hundred fifty-two billion, eight hundred sixty-one million, nine hundred fifty-three thousand, four hundred seventy-two".