249961543872 has 56 divisors (see below), whose sum is σ = 661543601472. Its totient is φ = 83296953600.

The previous prime is 249961543841. The next prime is 249961543903. The reversal of 249961543872 is 278345169942.

It is a happy number.

249961543872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (249961543841) and next prime (249961543903).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 503347 + ... + 867917.

Almost surely, 2^249961543872 is an apocalyptic number.

It is an amenable number.

249961543872 is an abundant number, since it is smaller than the sum of its proper divisors (411582057600).

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

249961543872 is a wasteful number, since it uses less digits than its factorization.

249961543872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368157 (or 368147 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 60.

The spelling of 249961543872 in words is "two hundred forty-nine billion, nine hundred sixty-one million, five hundred forty-three thousand, eight hundred seventy-two".