26693360489 has 2 divisors, whose sum is σ = 26693360490. Its totient is φ = 26693360488.

The previous prime is 26693360479. The next prime is 26693360531. The reversal of 26693360489 is 98406339662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18877386025 + 7815974464 = 137395^2 + 88408^2 .

It is a cyclic number.

It is not a de Polignac number, because 26693360489 - 2⁸ = 26693360233 is a prime.

It is not a weakly prime, because it can be changed into another prime (26693360429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13346680244 + 13346680245.

It is an arithmetic number, because the mean of its divisors is an integer number (13346680245).

Almost surely, 2^26693360489 is an apocalyptic number.

It is an amenable number.

26693360489 is a deficient number, since it is larger than the sum of its proper divisors (1).

26693360489 is an equidigital number, since it uses as much as digits as its factorization.

26693360489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 56.

The spelling of 26693360489 in words is "twenty-six billion, six hundred ninety-three million, three hundred sixty thousand, four hundred eighty-nine".