1312634345747 has 2 divisors, whose sum is σ = 1312634345748. Its totient is φ = 1312634345746.

The previous prime is 1312634345723. The next prime is 1312634345783. The reversal of 1312634345747 is 7475434362131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312634345747 - 2⁶ = 1312634345683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312634345695 and 1312634345704.

It is not a weakly prime, because it can be changed into another prime (1312634345047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656317172873 + 656317172874.

It is an arithmetic number, because the mean of its divisors is an integer number (656317172874).

Almost surely, 2^{1312634345747} is an apocalyptic number.

1312634345747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312634345747 is an equidigital number, since it uses as much as digits as its factorization.

1312634345747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 50.

The spelling of 1312634345747 in words is "one trillion, three hundred twelve billion, six hundred thirty-four million, three hundred forty-five thousand, seven hundred forty-seven".