26740639289 has 16 divisors (see below), whose sum is σ = 33033934080. Its totient is φ = 21078757440.

The previous prime is 26740639283. The next prime is 26740639301. The reversal of 26740639289 is 98293604762.

It is not a de Polignac number, because 26740639289 - 2⁸ = 26740639033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26740639283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521717 + ... + 570674.

It is an arithmetic number, because the mean of its divisors is an integer number (2064620880).

Almost surely, 2^26740639289 is an apocalyptic number.

It is an amenable number.

26740639289 is a deficient number, since it is larger than the sum of its proper divisors (6293294791).

26740639289 is a wasteful number, since it uses less digits than its factorization.

26740639289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092680.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 26740639289 in words is "twenty-six billion, seven hundred forty million, six hundred thirty-nine thousand, two hundred eighty-nine".