26658117897839 has 8 divisors (see below), whose sum is σ = 27410285675520. Its totient is φ = 25915179172896.

The previous prime is 26658117897833. The next prime is 26658117897877. The reversal of 26658117897839 is 93879871185662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26658117897839 - 2⁸ = 26658117897583 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 (26658117897833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2307257327 + ... + 2307268880.

It is an arithmetic number, because the mean of its divisors is an integer number (3426285709440).

Almost surely, 2^{26658117897839} is an apocalyptic number.

26658117897839 is a deficient number, since it is larger than the sum of its proper divisors (752167777681).

26658117897839 is a wasteful number, since it uses less digits than its factorization.

26658117897839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614526369.

The product of its digits is 2194698240, while the sum is 80.

The spelling of 26658117897839 in words is "twenty-six trillion, six hundred fifty-eight billion, one hundred seventeen million, eight hundred ninety-seven thousand, eight hundred thirty-nine".