249396751768 has 16 divisors (see below), whose sum is σ = 483743700000. Its totient is φ = 120398431776.

The previous prime is 249396751763. The next prime is 249396751783. The reversal of 249396751768 is 867157693942.

It is a super-2 number, since 2×249396751768² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249396751763) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 537492768 + ... + 537493231.

It is an arithmetic number, because the mean of its divisors is an integer number (30233981250).

Almost surely, 2^249396751768 is an apocalyptic number.

It is an amenable number.

249396751768 is a deficient number, since it is larger than the sum of its proper divisors (234346948232).

249396751768 is a wasteful number, since it uses less digits than its factorization.

249396751768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074986034 (or 1074986030 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 67.

The spelling of 249396751768 in words is "two hundred forty-nine billion, three hundred ninety-six million, seven hundred fifty-one thousand, seven hundred sixty-eight".