2591945972813 has 2 divisors, whose sum is σ = 2591945972814. Its totient is φ = 2591945972812.

The previous prime is 2591945972809. The next prime is 2591945972821. The reversal of 2591945972813 is 3182795491952.

2591945972813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1995063026089 + 596882946724 = 1412467^2 + 772582^2 .

It is a cyclic number.

It is not a de Polignac number, because 2591945972813 - 2² = 2591945972809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2591945972813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2591945978813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295972986406 + 1295972986407.

It is an arithmetic number, because the mean of its divisors is an integer number (1295972986407).

Almost surely, 2^{2591945972813} is an apocalyptic number.

It is an amenable number.

2591945972813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591945972813 is an equidigital number, since it uses as much as digits as its factorization.

2591945972813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48988800, while the sum is 65.

The spelling of 2591945972813 in words is "two trillion, five hundred ninety-one billion, nine hundred forty-five million, nine hundred seventy-two thousand, eight hundred thirteen".