1298772865013 has 16 divisors (see below), whose sum is σ = 1435678292160. Its totient is φ = 1167532939776.

The previous prime is 1298772864997. The next prime is 1298772865057. The reversal of 1298772865013 is 3105682778921.

It is a cyclic number.

It is not a de Polignac number, because 1298772865013 - 2⁴ = 1298772864997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298772865213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7830620 + ... + 7994757.

It is an arithmetic number, because the mean of its divisors is an integer number (89729893260).

Almost surely, 2^{1298772865013} is an apocalyptic number.

1298772865013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1298772865013 is a deficient number, since it is larger than the sum of its proper divisors (136905427147).

1298772865013 is a wasteful number, since it uses less digits than its factorization.

1298772865013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15825556.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 1298772865013 in words is "one trillion, two hundred ninety-eight billion, seven hundred seventy-two million, eight hundred sixty-five thousand, thirteen".