12926963557 has 16 divisors (see below), whose sum is σ = 14413861440. Its totient is φ = 11521329408.

The previous prime is 12926963461. The next prime is 12926963561. The reversal of 12926963557 is 75536962921.

It is a cyclic number.

It is not a de Polignac number, because 12926963557 - 2¹⁵ = 12926930789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12926963498 and 12926963507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12926363557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909298 + ... + 923404.

It is an arithmetic number, because the mean of its divisors is an integer number (900866340).

Almost surely, 2^12926963557 is an apocalyptic number.

12926963557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12926963557 is a deficient number, since it is larger than the sum of its proper divisors (1486897883).

12926963557 is a wasteful number, since it uses less digits than its factorization.

12926963557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16980.

The product of its digits is 6123600, while the sum is 55.

The spelling of 12926963557 in words is "twelve billion, nine hundred twenty-six million, nine hundred sixty-three thousand, five hundred fifty-seven".