249926893768 has 16 divisors (see below), whose sum is σ = 468771445980. Its totient is φ = 124921174848.

The previous prime is 249926893729. The next prime is 249926893787. The reversal of 249926893768 is 867398629942.

It can be written as a sum of positive squares in 2 ways, for example, as 214574621284 + 35352272484 = 463222^2 + 188022^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 249926893768.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5258871 + ... + 5306182.

Almost surely, 2^249926893768 is an apocalyptic number.

It is an amenable number.

249926893768 is a deficient number, since it is larger than the sum of its proper divisors (218844552212).

249926893768 is a wasteful number, since it uses less digits than its factorization.

249926893768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10568016 (or 10568012 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 73.

The spelling of 249926893768 in words is "two hundred forty-nine billion, nine hundred twenty-six million, eight hundred ninety-three thousand, seven hundred sixty-eight".