12513907663 has 2 divisors, whose sum is σ = 12513907664. Its totient is φ = 12513907662.

The previous prime is 12513907633. The next prime is 12513907669. The reversal of 12513907663 is 36670931521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12513907663 - 2¹³ = 12513899471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12513907669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256953831 + 6256953832.

It is an arithmetic number, because the mean of its divisors is an integer number (6256953832).

Almost surely, 2^12513907663 is an apocalyptic number.

12513907663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12513907663 is an equidigital number, since it uses as much as digits as its factorization.

12513907663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 12513907663 in words is "twelve billion, five hundred thirteen million, nine hundred seven thousand, six hundred sixty-three".