8312751657449 has 2 divisors, whose sum is σ = 8312751657450. Its totient is φ = 8312751657448.

The previous prime is 8312751657439. The next prime is 8312751657467. The reversal of 8312751657449 is 9447561572138.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6632376115600 + 1680375541849 = 2575340^2 + 1296293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8312751657449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8312751657391 and 8312751657400.

It is not a weakly prime, because it can be changed into another prime (8312751657439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4156375828724 + 4156375828725.

It is an arithmetic number, because the mean of its divisors is an integer number (4156375828725).

Almost surely, 2^{8312751657449} is an apocalyptic number.

It is an amenable number.

8312751657449 is a deficient number, since it is larger than the sum of its proper divisors (1).

8312751657449 is an equidigital number, since it uses as much as digits as its factorization.

8312751657449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50803200, while the sum is 62.

The spelling of 8312751657449 in words is "eight trillion, three hundred twelve billion, seven hundred fifty-one million, six hundred fifty-seven thousand, four hundred forty-nine".