249321775836 has 48 divisors (see below), whose sum is σ = 666831017216. Its totient is φ = 71023405824.

The previous prime is 249321775831. The next prime is 249321775883. The reversal of 249321775836 is 638577123942.

249321775836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×249321775836² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249321775831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4375426 + ... + 4432041.

Almost surely, 2^249321775836 is an apocalyptic number.

It is an amenable number.

249321775836 is an abundant number, since it is smaller than the sum of its proper divisors (417509241380).

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

249321775836 is a wasteful number, since it uses less digits than its factorization.

249321775836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8807818 (or 8807816 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 57.

The spelling of 249321775836 in words is "two hundred forty-nine billion, three hundred twenty-one million, seven hundred seventy-five thousand, eight hundred thirty-six".