249862287872 has 30 divisors (see below), whose sum is σ = 499259163579. Its totient is φ = 124925488640.

The previous prime is 249862287841. The next prime is 249862287911. The reversal of 249862287872 is 278782268942.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 124931143936 + 124931143936 = 353456^2 + 353456^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=353456.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 249862287799 and 249862287808.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11299547 + ... + 11321637.

Almost surely, 2^249862287872 is an apocalyptic number.

It is an amenable number.

249862287872 is a deficient number, since it is larger than the sum of its proper divisors (249396875707).

249862287872 is an frugal number, since it uses more digits than its factorization.

249862287872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44200 (or 22093 counting only the distinct ones).

The product of its digits is 86704128, while the sum is 65.

The spelling of 249862287872 in words is "two hundred forty-nine billion, eight hundred sixty-two million, two hundred eighty-seven thousand, eight hundred seventy-two".