1298109625663 has 2 divisors, whose sum is σ = 1298109625664. Its totient is φ = 1298109625662.

The previous prime is 1298109625601. The next prime is 1298109625667. The reversal of 1298109625663 is 3665269018921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1298109625663 - 2³³ = 1289519691071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1298109625598 and 1298109625607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298109625667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649054812831 + 649054812832.

It is an arithmetic number, because the mean of its divisors is an integer number (649054812832).

Almost surely, 2^{1298109625663} is an apocalyptic number.

1298109625663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298109625663 is an equidigital number, since it uses as much as digits as its factorization.

1298109625663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 1298109625663 in words is "one trillion, two hundred ninety-eight billion, one hundred nine million, six hundred twenty-five thousand, six hundred sixty-three".