252632764561 has 8 divisors (see below), whose sum is σ = 255103115904. Its totient is φ = 250162752000.

The previous prime is 252632764547. The next prime is 252632764577. The reversal of 252632764561 is 165467236252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252632764561 - 2²¹ = 252630667409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252632764511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571460 + ... + 1724746.

It is an arithmetic number, because the mean of its divisors is an integer number (31887889488).

Almost surely, 2^252632764561 is an apocalyptic number.

It is an amenable number.

252632764561 is a deficient number, since it is larger than the sum of its proper divisors (2470351343).

252632764561 is a wasteful number, since it uses less digits than its factorization.

252632764561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169391.

The product of its digits is 3628800, while the sum is 49.

The spelling of 252632764561 in words is "two hundred fifty-two billion, six hundred thirty-two million, seven hundred sixty-four thousand, five hundred sixty-one".