12561263383 has 2 divisors, whose sum is σ = 12561263384. Its totient is φ = 12561263382.

The previous prime is 12561263359. The next prime is 12561263387. The reversal of 12561263383 is 38336216521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12561263383 - 2⁹ = 12561262871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12561263387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6280631691 + 6280631692.

It is an arithmetic number, because the mean of its divisors is an integer number (6280631692).

Almost surely, 2^12561263383 is an apocalyptic number.

12561263383 is a deficient number, since it is larger than the sum of its proper divisors (1).

12561263383 is an equidigital number, since it uses as much as digits as its factorization.

12561263383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The spelling of 12561263383 in words is "twelve billion, five hundred sixty-one million, two hundred sixty-three thousand, three hundred eighty-three".