26269734643 has 2 divisors, whose sum is σ = 26269734644. Its totient is φ = 26269734642.

The previous prime is 26269734587. The next prime is 26269734661. The reversal of 26269734643 is 34643796262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26269734643 - 2⁹ = 26269734131 is a prime.

It is not a weakly prime, because it can be changed into another prime (26261734643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13134867321 + 13134867322.

It is an arithmetic number, because the mean of its divisors is an integer number (13134867322).

Almost surely, 2^26269734643 is an apocalyptic number.

26269734643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26269734643 is an equidigital number, since it uses as much as digits as its factorization.

26269734643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 52.

The spelling of 26269734643 in words is "twenty-six billion, two hundred sixty-nine million, seven hundred thirty-four thousand, six hundred forty-three".