252660729440 has 48 divisors (see below), whose sum is σ = 682183972512. Its totient is φ = 86626535424.

The previous prime is 252660729397. The next prime is 252660729443. The reversal of 252660729440 is 44927066252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252660729443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112793849 + ... + 112796088.

It is an arithmetic number, because the mean of its divisors is an integer number (14212166094).

Almost surely, 2^252660729440 is an apocalyptic number.

252660729440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252660729440 is an abundant number, since it is smaller than the sum of its proper divisors (429523243072).

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

252660729440 is a wasteful number, since it uses less digits than its factorization.

252660729440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225589959 (or 225589951 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 252660729440 in words is "two hundred fifty-two billion, six hundred sixty million, seven hundred twenty-nine thousand, four hundred forty".