26315789979 has 8 divisors (see below), whose sum is σ = 36036036880. Its totient is φ = 17069701536.

The previous prime is 26315789977. The next prime is 26315789987. The reversal of 26315789979 is 97998751362.

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

It is not a de Polignac number, because 26315789979 - 2¹ = 26315789977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26315789977) 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, 118539484 + ... + 118539705.

It is an arithmetic number, because the mean of its divisors is an integer number (4504504610).

Almost surely, 2^26315789979 is an apocalyptic number.

26315789979 is a deficient number, since it is larger than the sum of its proper divisors (9720246901).

26315789979 is a wasteful number, since it uses less digits than its factorization.

26315789979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237079229.

The product of its digits is 51438240, while the sum is 66.

The spelling of 26315789979 in words is "twenty-six billion, three hundred fifteen million, seven hundred eighty-nine thousand, nine hundred seventy-nine".