1298109621583 has 2 divisors, whose sum is σ = 1298109621584. Its totient is φ = 1298109621582.

The previous prime is 1298109621577. The next prime is 1298109621617. The reversal of 1298109621583 is 3851269018921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1298109621583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298109621533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649054810791 + 649054810792.

It is an arithmetic number, because the mean of its divisors is an integer number (649054810792).

Almost surely, 2^{1298109621583} is an apocalyptic number.

1298109621583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298109621583 is an equidigital number, since it uses as much as digits as its factorization.

1298109621583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 1298109621583 in words is "one trillion, two hundred ninety-eight billion, one hundred nine million, six hundred twenty-one thousand, five hundred eighty-three".