12758945831 has 4 divisors (see below), whose sum is σ = 12999680712. Its totient is φ = 12518210952.

The previous prime is 12758945827. The next prime is 12758945861. The reversal of 12758945831 is 13854985721.

12758945831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12758945831 - 2² = 12758945827 is a prime.

It is a super-2 number, since 2×12758945831² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 240734827 = 12758945831 / (1 + 2 + 7 + 5 + 8 + 9 + 4 + 5 + 8 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12758945861) 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, 120367361 + ... + 120367466.

It is an arithmetic number, because the mean of its divisors is an integer number (3249920178).

Almost surely, 2^12758945831 is an apocalyptic number.

12758945831 is a deficient number, since it is larger than the sum of its proper divisors (240734881).

12758945831 is an equidigital number, since it uses as much as digits as its factorization.

12758945831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240734880.

The product of its digits is 2419200, while the sum is 53.

The spelling of 12758945831 in words is "twelve billion, seven hundred fifty-eight million, nine hundred forty-five thousand, eight hundred thirty-one".