1207718587013 has 4 divisors (see below), whose sum is σ = 1207762613100. Its totient is φ = 1207674560928.

The previous prime is 1207718586979. The next prime is 1207718587039. The reversal of 1207718587013 is 3107858177021.

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 521143941409 + 686574645604 = 721903^2 + 828598^2 .

It is a cyclic number.

It is not a de Polignac number, because 1207718587013 - 2¹⁴ = 1207718570629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1207718589013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21971870 + ... + 22026767.

It is an arithmetic number, because the mean of its divisors is an integer number (301940653275).

Almost surely, 2^{1207718587013} is an apocalyptic number.

It is an amenable number.

1207718587013 is a deficient number, since it is larger than the sum of its proper divisors (44026087).

1207718587013 is an equidigital number, since it uses as much as digits as its factorization.

1207718587013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44026086.

The product of its (nonzero) digits is 658560, while the sum is 50.

The spelling of 1207718587013 in words is "one trillion, two hundred seven billion, seven hundred eighteen million, five hundred eighty-seven thousand, thirteen".