12517806783 has 8 divisors (see below), whose sum is σ = 16722323968. Its totient is φ = 8329247064.

The previous prime is 12517806773. The next prime is 12517806793. The reversal of 12517806783 is 38760871521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12517806773) and next prime (12517806793).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12517806783 - 2⁵ = 12517806751 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 (12517806773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3987535 + ... + 3990672.

It is an arithmetic number, because the mean of its divisors is an integer number (2090290496).

Almost surely, 2^12517806783 is an apocalyptic number.

12517806783 is a deficient number, since it is larger than the sum of its proper divisors (4204517185).

12517806783 is an equidigital number, since it uses as much as digits as its factorization.

12517806783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978733.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 12517806783 in words is "twelve billion, five hundred seventeen million, eight hundred six thousand, seven hundred eighty-three".