26804392979 has 16 divisors (see below), whose sum is σ = 33134109120. Its totient is φ = 21115244160.

The previous prime is 26804392969. The next prime is 26804392981. The reversal of 26804392979 is 97929340862.

It is a cyclic number.

It is not a de Polignac number, because 26804392979 - 2⁴ = 26804392963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26804392969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622292 + ... + 663969.

It is an arithmetic number, because the mean of its divisors is an integer number (2070881820).

Almost surely, 2^26804392979 is an apocalyptic number.

26804392979 is a deficient number, since it is larger than the sum of its proper divisors (6329716141).

26804392979 is a wasteful number, since it uses less digits than its factorization.

26804392979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286510.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 26804392979 in words is "twenty-six billion, eight hundred four million, three hundred ninety-two thousand, nine hundred seventy-nine".