249775493748 has 96 divisors (see below), whose sum is σ = 673337871360. Its totient is φ = 71318058240.

The previous prime is 249775493707. The next prime is 249775493753. The reversal of 249775493748 is 847394577942.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 410553 + ... + 817376.

It is an arithmetic number, because the mean of its divisors is an integer number (7013936160).

Almost surely, 2^249775493748 is an apocalyptic number.

It is an amenable number.

249775493748 is an abundant number, since it is smaller than the sum of its proper divisors (423562377612).

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

249775493748 is a wasteful number, since it uses less digits than its factorization.

249775493748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228037 (or 1228035 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 69.

The spelling of 249775493748 in words is "two hundred forty-nine billion, seven hundred seventy-five million, four hundred ninety-three thousand, seven hundred forty-eight".