12542637704771 has 2 divisors, whose sum is σ = 12542637704772. Its totient is φ = 12542637704770.

The previous prime is 12542637704749. The next prime is 12542637704797. The reversal of 12542637704771 is 17740773624521.

12542637704771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12542637704771 - 2³⁸ = 12267759797827 is a prime.

It is not a weakly prime, because it can be changed into another prime (12542637704171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271318852385 + 6271318852386.

It is an arithmetic number, because the mean of its divisors is an integer number (6271318852386).

Almost surely, 2^{12542637704771} is an apocalyptic number.

12542637704771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12542637704771 is an equidigital number, since it uses as much as digits as its factorization.

12542637704771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 12542637704771 in words is "twelve trillion, five hundred forty-two billion, six hundred thirty-seven million, seven hundred four thousand, seven hundred seventy-one".