26421033624399 has 6 divisors (see below), whose sum is σ = 38163715235256. Its totient is φ = 17614022416260.

The previous prime is 26421033624331. The next prime is 26421033624431. The reversal of 26421033624399 is 99342633012462.

26421033624399 is a `hidden beast` number, since 2 + 6 + 4 + 2 + 1 + 0 + 3 + 3 + 624 + 3 + 9 + 9 = 666.

It is not a de Polignac number, because 26421033624399 - 2²⁵ = 26421000069967 is a prime.

It is a super-2 number, since 2×26421033624399² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26421033624319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1467835201347 + ... + 1467835201364.

It is an arithmetic number, because the mean of its divisors is an integer number (6360619205876).

Almost surely, 2^{26421033624399} is an apocalyptic number.

26421033624399 is a deficient number, since it is larger than the sum of its proper divisors (11742681610857).

26421033624399 is a wasteful number, since it uses less digits than its factorization.

26421033624399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935670402717 (or 2935670402714 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 54.

The spelling of 26421033624399 in words is "twenty-six trillion, four hundred twenty-one billion, thirty-three million, six hundred twenty-four thousand, three hundred ninety-nine".