26830421685407 has 4 divisors (see below), whose sum is σ = 26830433687520. Its totient is φ = 26830409683296.

The previous prime is 26830421685377. The next prime is 26830421685409. The reversal of 26830421685407 is 70458612403862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26830421685407 - 2¹⁶ = 26830421619871 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 (26830421685409) 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, 1544807 + ... + 7486472.

It is an arithmetic number, because the mean of its divisors is an integer number (6707608421880).

Almost surely, 2^{26830421685407} is an apocalyptic number.

26830421685407 is a deficient number, since it is larger than the sum of its proper divisors (12002113).

26830421685407 is an equidigital number, since it uses as much as digits as its factorization.

26830421685407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12002112.

The product of its (nonzero) digits is 15482880, while the sum is 56.

The spelling of 26830421685407 in words is "twenty-six trillion, eight hundred thirty billion, four hundred twenty-one million, six hundred eighty-five thousand, four hundred seven".