1312516350667 has 2 divisors, whose sum is σ = 1312516350668. Its totient is φ = 1312516350666.

The previous prime is 1312516350661. The next prime is 1312516350697. The reversal of 1312516350667 is 7660536152131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312516350667 - 2⁷ = 1312516350539 is a prime.

It is a super-2 number, since 2×1312516350667² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1312516350661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656258175333 + 656258175334.

It is an arithmetic number, because the mean of its divisors is an integer number (656258175334).

Almost surely, 2^{1312516350667} is an apocalyptic number.

1312516350667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312516350667 is an equidigital number, since it uses as much as digits as its factorization.

1312516350667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 1312516350667 in words is "one trillion, three hundred twelve billion, five hundred sixteen million, three hundred fifty thousand, six hundred sixty-seven".