2591349880809 has 32 divisors (see below), whose sum is σ = 3643644985344. Its totient is φ = 1635741555840.

The previous prime is 2591349880799. The next prime is 2591349880811. The reversal of 2591349880809 is 9080889431952.

It is a happy number.

2591349880809 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2591349880809 - 2⁷ = 2591349880681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2591349880809.

It is not an unprimeable number, because it can be changed into a prime (2591349880109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13731757 + ... + 13919189.

It is an arithmetic number, because the mean of its divisors is an integer number (113863905792).

Almost surely, 2^{2591349880809} is an apocalyptic number.

It is an amenable number.

2591349880809 is a deficient number, since it is larger than the sum of its proper divisors (1052295104535).

2591349880809 is a wasteful number, since it uses less digits than its factorization.

2591349880809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190677.

The product of its (nonzero) digits is 44789760, while the sum is 66.

The spelling of 2591349880809 in words is "two trillion, five hundred ninety-one billion, three hundred forty-nine million, eight hundred eighty thousand, eight hundred nine".