1316915191751 has 2 divisors, whose sum is σ = 1316915191752. Its totient is φ = 1316915191750.

The previous prime is 1316915191717. The next prime is 1316915191759. The reversal of 1316915191751 is 1571915196131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316915191751 - 2¹⁸ = 1316914929607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1316915191751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316915191759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658457595875 + 658457595876.

It is an arithmetic number, because the mean of its divisors is an integer number (658457595876).

Almost surely, 2^{1316915191751} is an apocalyptic number.

1316915191751 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316915191751 is an equidigital number, since it uses as much as digits as its factorization.

1316915191751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 255150, while the sum is 50.

The spelling of 1316915191751 in words is "one trillion, three hundred sixteen billion, nine hundred fifteen million, one hundred ninety-one thousand, seven hundred fifty-one".