26819320872977 has 2 divisors, whose sum is σ = 26819320872978. Its totient is φ = 26819320872976.

The previous prime is 26819320872919. The next prime is 26819320873001. The reversal of 26819320872977 is 77927802391862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24800091240961 + 2019229632016 = 4979969^2 + 1420996^2 .

It is a cyclic number.

It is not a de Polignac number, because 26819320872977 - 2¹² = 26819320868881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26819320872977.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13409660436488 + 13409660436489.

It is an arithmetic number, because the mean of its divisors is an integer number (13409660436489).

Almost surely, 2^{26819320872977} is an apocalyptic number.

It is an amenable number.

26819320872977 is a deficient number, since it is larger than the sum of its proper divisors (1).

26819320872977 is an equidigital number, since it uses as much as digits as its factorization.

26819320872977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256048128, while the sum is 71.

The spelling of 26819320872977 in words is "twenty-six trillion, eight hundred nineteen billion, three hundred twenty million, eight hundred seventy-two thousand, nine hundred seventy-seven".