26535100243 has 2 divisors, whose sum is σ = 26535100244. Its totient is φ = 26535100242.

The previous prime is 26535100217. The next prime is 26535100261. The reversal of 26535100243 is 34200153562.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26535100243 - 2⁵ = 26535100211 is a prime.

It is a super-2 number, since 2×26535100243² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26535100213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13267550121 + 13267550122.

It is an arithmetic number, because the mean of its divisors is an integer number (13267550122).

Almost surely, 2^26535100243 is an apocalyptic number.

26535100243 is a deficient number, since it is larger than the sum of its proper divisors (1).

26535100243 is an equidigital number, since it uses as much as digits as its factorization.

26535100243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 26535100243 in words is "twenty-six billion, five hundred thirty-five million, one hundred thousand, two hundred forty-three".