26487637643 has 2 divisors, whose sum is σ = 26487637644. Its totient is φ = 26487637642.

The previous prime is 26487637607. The next prime is 26487637651. The reversal of 26487637643 is 34673678462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26487637643 - 2⁸ = 26487637387 is a prime.

It is not a weakly prime, because it can be changed into another prime (26487667643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13243818821 + 13243818822.

It is an arithmetic number, because the mean of its divisors is an integer number (13243818822).

Almost surely, 2^26487637643 is an apocalyptic number.

26487637643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26487637643 is an equidigital number, since it uses as much as digits as its factorization.

26487637643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 56.

The spelling of 26487637643 in words is "twenty-six billion, four hundred eighty-seven million, six hundred thirty-seven thousand, six hundred forty-three".