26563340953 has 2 divisors, whose sum is σ = 26563340954. Its totient is φ = 26563340952.

The previous prime is 26563340897. The next prime is 26563340957. The reversal of 26563340953 is 35904336562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21634879744 + 4928461209 = 147088^2 + 70203^2 .

It is a cyclic number.

It is not a de Polignac number, because 26563340953 - 2³³ = 17973406361 is a prime.

It is a super-2 number, since 2×26563340953² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26563340957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13281670476 + 13281670477.

It is an arithmetic number, because the mean of its divisors is an integer number (13281670477).

Almost surely, 2^26563340953 is an apocalyptic number.

It is an amenable number.

26563340953 is a deficient number, since it is larger than the sum of its proper divisors (1).

26563340953 is an equidigital number, since it uses as much as digits as its factorization.

26563340953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 46.

The spelling of 26563340953 in words is "twenty-six billion, five hundred sixty-three million, three hundred forty thousand, nine hundred fifty-three".