252451729908 has 144 divisors (see below), whose sum is σ = 732164544384. Its totient is φ = 71846818560.

The previous prime is 252451729877. The next prime is 252451729939. The reversal of 252451729908 is 809927154252.

252451729908 is a `hidden beast` number, since 2 + 524 + 5 + 1 + 7 + 29 + 90 + 8 = 666.

252451729908 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (252451729877) and next prime (252451729939).

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, 99742603 + ... + 99745133.

Almost surely, 2^252451729908 is an apocalyptic number.

252451729908 is a gapful number since it is divisible by the number (28) 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 252451729908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366082272192).

252451729908 is an abundant number, since it is smaller than the sum of its proper divisors (479712814476).

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

252451729908 is a wasteful number, since it uses less digits than its factorization.

252451729908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942 (or 3937 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 252451729908 in words is "two hundred fifty-two billion, four hundred fifty-one million, seven hundred twenty-nine thousand, nine hundred eight".