252621716628 has 24 divisors (see below), whose sum is σ = 589459066560. Its totient is φ = 84206039680.

The previous prime is 252621716591. The next prime is 252621716639. The reversal of 252621716628 is 826617126252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253113 + ... + 1440671.

It is an arithmetic number, because the mean of its divisors is an integer number (24560794440).

Almost surely, 2^252621716628 is an apocalyptic number.

It is an amenable number.

252621716628 is an abundant number, since it is smaller than the sum of its proper divisors (336837349932).

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

252621716628 is a wasteful number, since it uses less digits than its factorization.

252621716628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299807 (or 299805 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The spelling of 252621716628 in words is "two hundred fifty-two billion, six hundred twenty-one million, seven hundred sixteen thousand, six hundred twenty-eight".