26791623953 has 2 divisors, whose sum is σ = 26791623954. Its totient is φ = 26791623952.

The previous prime is 26791623941. The next prime is 26791623997. The reversal of 26791623953 is 35932619762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22834836544 + 3956787409 = 151112^2 + 62903^2 .

It is a cyclic number.

It is not a de Polignac number, because 26791623953 - 2¹² = 26791619857 is a prime.

It is a super-2 number, since 2×26791623953² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26791623895 and 26791623904.

It is not a weakly prime, because it can be changed into another prime (26791623913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13395811976 + 13395811977.

It is an arithmetic number, because the mean of its divisors is an integer number (13395811977).

Almost surely, 2^26791623953 is an apocalyptic number.

It is an amenable number.

26791623953 is a deficient number, since it is larger than the sum of its proper divisors (1).

26791623953 is an equidigital number, since it uses as much as digits as its factorization.

26791623953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 53.

The spelling of 26791623953 in words is "twenty-six billion, seven hundred ninety-one million, six hundred twenty-three thousand, nine hundred fifty-three".