12926280757 has 4 divisors (see below), whose sum is σ = 13920610060. Its totient is φ = 11931951456.

The previous prime is 12926280749. The next prime is 12926280791. The reversal of 12926280757 is 75708262921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75708262921 = 52313 ⋅1447217.

It can be written as a sum of positive squares in 2 ways, for example, as 7907833476 + 5018447281 = 88926^2 + 70841^2 .

It is a cyclic number.

It is not a de Polignac number, because 12926280757 - 2³ = 12926280749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12926280757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12926281757) 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, 497164632 + ... + 497164657.

It is an arithmetic number, because the mean of its divisors is an integer number (3480152515).

Almost surely, 2^12926280757 is an apocalyptic number.

It is an amenable number.

12926280757 is a deficient number, since it is larger than the sum of its proper divisors (994329303).

12926280757 is an equidigital number, since it uses as much as digits as its factorization.

12926280757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994329302.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 12926280757 in words is "twelve billion, nine hundred twenty-six million, two hundred eighty thousand, seven hundred fifty-seven".