252640696563 has 6 divisors (see below), whose sum is σ = 364925450604. Its totient is φ = 168427131036.

The previous prime is 252640696547. The next prime is 252640696571. The reversal of 252640696563 is 365696046252.

252640696563 is a `hidden beast` number, since 2 + 526 + 4 + 0 + 69 + 6 + 56 + 3 = 666.

It is not a de Polignac number, because 252640696563 - 2⁴ = 252640696547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252640696513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14035594245 + ... + 14035594262.

It is an arithmetic number, because the mean of its divisors is an integer number (60820908434).

Almost surely, 2^252640696563 is an apocalyptic number.

252640696563 is a deficient number, since it is larger than the sum of its proper divisors (112284754041).

252640696563 is a wasteful number, since it uses less digits than its factorization.

252640696563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28071188513 (or 28071188510 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 54.

The spelling of 252640696563 in words is "two hundred fifty-two billion, six hundred forty million, six hundred ninety-six thousand, five hundred sixty-three".