249397087052 has 24 divisors (see below), whose sum is σ = 436914278640. Its totient is φ = 124564512960.

The previous prime is 249397087019. The next prime is 249397087067. The reversal of 249397087052 is 250780793942.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16551602 + ... + 16566662.

It is an arithmetic number, because the mean of its divisors is an integer number (18204761610).

Almost surely, 2^249397087052 is an apocalyptic number.

It is an amenable number.

249397087052 is a deficient number, since it is larger than the sum of its proper divisors (187517191588).

249397087052 is a wasteful number, since it uses less digits than its factorization.

249397087052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19241 (or 19239 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 249397087052 in words is "two hundred forty-nine billion, three hundred ninety-seven million, eighty-seven thousand, fifty-two".