249383790312064 has 32 divisors (see below), whose sum is σ = 496830861301140. Its totient is φ = 124688985907200.

The previous prime is 249383790312061. The next prime is 249383790312091. The reversal of 249383790312064 is 460213097383942.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 239395409318464 + 9988380993600 = 15472408^2 + 3160440^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 249383790311993 and 249383790312011.

It is not an unprimeable number, because it can be changed into a prime (249383790312061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17215729 + ... + 28198384.

Almost surely, 2^{249383790312064} is an apocalyptic number.

It is an amenable number.

249383790312064 is a deficient number, since it is larger than the sum of its proper divisors (247447070989076).

249383790312064 is an equidigital number, since it uses as much as digits as its factorization.

249383790312064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45457028 (or 45457016 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 61.

The spelling of 249383790312064 in words is "two hundred forty-nine trillion, three hundred eighty-three billion, seven hundred ninety million, three hundred twelve thousand, sixty-four".