26819320872919 has 2 divisors, whose sum is σ = 26819320872920. Its totient is φ = 26819320872918.

The previous prime is 26819320872917. The next prime is 26819320872977. The reversal of 26819320872919 is 91927802391862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26819320872919 - 2¹ = 26819320872917 is a prime.

It is a super-2 number, since 2×26819320872919² (a number of 28 digits) contains 22 as substring.

Together with 26819320872917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26819320872917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13409660436459 + 13409660436460.

It is an arithmetic number, because the mean of its divisors is an integer number (13409660436460).

Almost surely, 2^{26819320872919} is an apocalyptic number.

26819320872919 is a deficient number, since it is larger than the sum of its proper divisors (1).

26819320872919 is an equidigital number, since it uses as much as digits as its factorization.

26819320872919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47029248, while the sum is 67.

The spelling of 26819320872919 in words is "twenty-six trillion, eight hundred nineteen billion, three hundred twenty million, eight hundred seventy-two thousand, nine hundred nineteen".