12783440095513 has 4 divisors (see below), whose sum is σ = 12787009895268. Its totient is φ = 12779870295760.

The previous prime is 12783440095493. The next prime is 12783440095519. The reversal of 12783440095513 is 31559004438721.

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 5821931985424 + 6961508110089 = 2412868^2 + 2638467^2 .

It is a cyclic number.

It is not a de Polignac number, because 12783440095513 - 2²⁹ = 12782903224601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12783440095519) 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, 1784894506 + ... + 1784901667.

It is an arithmetic number, because the mean of its divisors is an integer number (3196752473817).

Almost surely, 2^{12783440095513} is an apocalyptic number.

It is an amenable number.

12783440095513 is a deficient number, since it is larger than the sum of its proper divisors (3569799755).

12783440095513 is an equidigital number, since it uses as much as digits as its factorization.

12783440095513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569799754.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 12783440095513 in words is "twelve trillion, seven hundred eighty-three billion, four hundred forty million, ninety-five thousand, five hundred thirteen".