252784308651 has 16 divisors (see below), whose sum is σ = 385204744704. Its totient is φ = 144444573504.

The previous prime is 252784308607. The next prime is 252784308653. The reversal of 252784308651 is 156803487252.

It is a de Polignac number, because none of the positive numbers 2^k-252784308651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252784308594 and 252784308603.

It is not an unprimeable number, because it can be changed into a prime (252784308653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874506 + ... + 1127088.

It is an arithmetic number, because the mean of its divisors is an integer number (24075296544).

Almost surely, 2^252784308651 is an apocalyptic number.

252784308651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

252784308651 is a deficient number, since it is larger than the sum of its proper divisors (132420436053).

252784308651 is a wasteful number, since it uses less digits than its factorization.

252784308651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300250.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 252784308651 in words is "two hundred fifty-two billion, seven hundred eighty-four million, three hundred eight thousand, six hundred fifty-one".