1299989836793 has 2 divisors, whose sum is σ = 1299989836794. Its totient is φ = 1299989836792.

The previous prime is 1299989836771. The next prime is 1299989836801. The reversal of 1299989836793 is 3976389899921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 700522128784 + 599467708009 = 836972^2 + 774253^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299989836793 - 2⁶ = 1299989836729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1299989836193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649994918396 + 649994918397.

It is an arithmetic number, because the mean of its divisors is an integer number (649994918397).

Almost surely, 2^{1299989836793} is an apocalyptic number.

It is an amenable number.

1299989836793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299989836793 is an equidigital number, since it uses as much as digits as its factorization.

1299989836793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857026816, while the sum is 83.

The spelling of 1299989836793 in words is "one trillion, two hundred ninety-nine billion, nine hundred eighty-nine million, eight hundred thirty-six thousand, seven hundred ninety-three".