26630265517679 has 4 divisors (see below), whose sum is σ = 27548550535560. Its totient is φ = 25711980499800.

The previous prime is 26630265517637. The next prime is 26630265517693. The reversal of 26630265517679 is 97671556203662.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26630265517679 - 2¹⁶ = 26630265452143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26630265517979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459142508897 + ... + 459142508954.

It is an arithmetic number, because the mean of its divisors is an integer number (6887137633890).

Almost surely, 2^{26630265517679} is an apocalyptic number.

26630265517679 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

26630265517679 is a deficient number, since it is larger than the sum of its proper divisors (918285017881).

26630265517679 is an equidigital number, since it uses as much as digits as its factorization.

26630265517679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918285017880.

The product of its (nonzero) digits is 171460800, while the sum is 65.

The spelling of 26630265517679 in words is "twenty-six trillion, six hundred thirty billion, two hundred sixty-five million, five hundred seventeen thousand, six hundred seventy-nine".