26427704357 has 2 divisors, whose sum is σ = 26427704358. Its totient is φ = 26427704356.

The previous prime is 26427704353. The next prime is 26427704377. The reversal of 26427704357 is 75340772462.

It is a Cunningham number, because it is equal to 162566²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26427704356 + 1 = 162566^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 26427704357 - 2² = 26427704353 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26427704351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13213852178 + 13213852179.

It is an arithmetic number, because the mean of its divisors is an integer number (13213852179).

Almost surely, 2^26427704357 is an apocalyptic number.

It is an amenable number.

26427704357 is a deficient number, since it is larger than the sum of its proper divisors (1).

26427704357 is an equidigital number, since it uses as much as digits as its factorization.

26427704357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 47.

The spelling of 26427704357 in words is "twenty-six billion, four hundred twenty-seven million, seven hundred four thousand, three hundred fifty-seven".