26943423953 has 2 divisors, whose sum is σ = 26943423954. Its totient is φ = 26943423952.

The previous prime is 26943423931. The next prime is 26943423959. The reversal of 26943423953 is 35932434962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21670195264 + 5273228689 = 147208^2 + 72617^2 .

It is a cyclic number.

It is not a de Polignac number, because 26943423953 - 2⁶ = 26943423889 is a prime.

It is a super-2 number, since 2×26943423953² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26943423959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13471711976 + 13471711977.

It is an arithmetic number, because the mean of its divisors is an integer number (13471711977).

Almost surely, 2^26943423953 is an apocalyptic number.

It is an amenable number.

26943423953 is a deficient number, since it is larger than the sum of its proper divisors (1).

26943423953 is an equidigital number, since it uses as much as digits as its factorization.

26943423953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 50.

The spelling of 26943423953 in words is "twenty-six billion, nine hundred forty-three million, four hundred twenty-three thousand, nine hundred fifty-three".