12808877533 has 2 divisors, whose sum is σ = 12808877534. Its totient is φ = 12808877532.

The previous prime is 12808877503. The next prime is 12808877561. The reversal of 12808877533 is 33577880821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11205916164 + 1602961369 = 105858^2 + 40037^2 .

It is a cyclic number.

It is not a de Polignac number, because 12808877533 - 2⁹ = 12808877021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12808877503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404438766 + 6404438767.

It is an arithmetic number, because the mean of its divisors is an integer number (6404438767).

Almost surely, 2^12808877533 is an apocalyptic number.

It is an amenable number.

12808877533 is a deficient number, since it is larger than the sum of its proper divisors (1).

12808877533 is an equidigital number, since it uses as much as digits as its factorization.

12808877533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 12808877533 in words is "twelve billion, eight hundred eight million, eight hundred seventy-seven thousand, five hundred thirty-three".