1299350785793 has 4 divisors (see below), whose sum is σ = 1300034296788. Its totient is φ = 1298667274800.

The previous prime is 1299350785757. The next prime is 1299350785807. The reversal of 1299350785793 is 3975870539921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 440852177089 + 858498608704 = 663967^2 + 926552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1299350785793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299350784793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341752646 + ... + 341756447.

It is an arithmetic number, because the mean of its divisors is an integer number (325008574197).

Almost surely, 2^{1299350785793} is an apocalyptic number.

It is an amenable number.

1299350785793 is a deficient number, since it is larger than the sum of its proper divisors (683510995).

1299350785793 is an equidigital number, since it uses as much as digits as its factorization.

1299350785793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683510994.

The product of its (nonzero) digits is 128595600, while the sum is 68.

The spelling of 1299350785793 in words is "one trillion, two hundred ninety-nine billion, three hundred fifty million, seven hundred eighty-five thousand, seven hundred ninety-three".