26936568317 has 2 divisors, whose sum is σ = 26936568318. Its totient is φ = 26936568316.

The previous prime is 26936568277. The next prime is 26936568331. The reversal of 26936568317 is 71386563962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13602323641 + 13334244676 = 116629^2 + 115474^2 .

It is a cyclic number.

It is not a de Polignac number, because 26936568317 - 2¹⁰ = 26936567293 is a prime.

It is a super-3 number, since 3×26936568317³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26936561317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13468284158 + 13468284159.

It is an arithmetic number, because the mean of its divisors is an integer number (13468284159).

Almost surely, 2^26936568317 is an apocalyptic number.

It is an amenable number.

26936568317 is a deficient number, since it is larger than the sum of its proper divisors (1).

26936568317 is an equidigital number, since it uses as much as digits as its factorization.

26936568317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 56.

The spelling of 26936568317 in words is "twenty-six billion, nine hundred thirty-six million, five hundred sixty-eight thousand, three hundred seventeen".