249943734968 has 32 divisors (see below), whose sum is σ = 483792946560. Its totient is φ = 120932797440.

The previous prime is 249943734959. The next prime is 249943734979. The reversal of 249943734968 is 869437349942.

It is a super-2 number, since 2×249943734968² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 249943734898 and 249943734907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6675596 + ... + 6712932.

It is an arithmetic number, because the mean of its divisors is an integer number (15118529580).

Almost surely, 2^249943734968 is an apocalyptic number.

It is an amenable number.

249943734968 is a deficient number, since it is larger than the sum of its proper divisors (233849211592).

249943734968 is a wasteful number, since it uses less digits than its factorization.

249943734968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64367 (or 64363 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 68.

The spelling of 249943734968 in words is "two hundred forty-nine billion, nine hundred forty-three million, seven hundred thirty-four thousand, nine hundred sixty-eight".