1318245998761 has 2 divisors, whose sum is σ = 1318245998762. Its totient is φ = 1318245998760.

The previous prime is 1318245998711. The next prime is 1318245998789. The reversal of 1318245998761 is 1678995428131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1120337571600 + 197908427161 = 1058460^2 + 444869^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318245998761 - 2⁹ = 1318245998249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1318245998693 and 1318245998702.

It is not a weakly prime, because it can be changed into another prime (1318245998701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659122999380 + 659122999381.

It is an arithmetic number, because the mean of its divisors is an integer number (659122999381).

Almost surely, 2^{1318245998761} is an apocalyptic number.

It is an amenable number.

1318245998761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318245998761 is an equidigital number, since it uses as much as digits as its factorization.

1318245998761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 64.

The spelling of 1318245998761 in words is "one trillion, three hundred eighteen billion, two hundred forty-five million, nine hundred ninety-eight thousand, seven hundred sixty-one".