249432985874 has 16 divisors (see below), whose sum is σ = 375396480288. Its totient is φ = 124300936032.

The previous prime is 249432985829. The next prime is 249432985897. The reversal of 249432985874 is 478589234942.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 249432985874.

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, 5377409 + ... + 5423595.

It is an arithmetic number, because the mean of its divisors is an integer number (23462280018).

Almost surely, 2^249432985874 is an apocalyptic number.

249432985874 is a deficient number, since it is larger than the sum of its proper divisors (125963494414).

249432985874 is a wasteful number, since it uses less digits than its factorization.

249432985874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55129.

The product of its digits is 139345920, while the sum is 65.

The spelling of 249432985874 in words is "two hundred forty-nine billion, four hundred thirty-two million, nine hundred eighty-five thousand, eight hundred seventy-four".