249159730944 has 72 divisors (see below), whose sum is σ = 664005786640. Its totient is φ = 82943336448.

The previous prime is 249159730943. The next prime is 249159730991. The reversal of 249159730944 is 449037951942.

It is a happy number.

It is a super-2 number, since 2×249159730944² (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 (249159730943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367092 + ... + 795660.

Almost surely, 2^249159730944 is an apocalyptic number.

249159730944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249159730944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332002893320).

249159730944 is an abundant number, since it is smaller than the sum of its proper divisors (414846055696).

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

249159730944 is an equidigital number, since it uses as much as digits as its factorization.

249159730944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429345 (or 429331 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 249159730944 in words is "two hundred forty-nine billion, one hundred fifty-nine million, seven hundred thirty thousand, nine hundred forty-four".