26815051807 has 2 divisors, whose sum is σ = 26815051808. Its totient is φ = 26815051806.

The previous prime is 26815051733. The next prime is 26815051817. The reversal of 26815051807 is 70815051862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26815051807 - 2²⁷ = 26680834079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26815051817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13407525903 + 13407525904.

It is an arithmetic number, because the mean of its divisors is an integer number (13407525904).

Almost surely, 2^26815051807 is an apocalyptic number.

26815051807 is a deficient number, since it is larger than the sum of its proper divisors (1).

26815051807 is an equidigital number, since it uses as much as digits as its factorization.

26815051807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 26815051807 in words is "twenty-six billion, eight hundred fifteen million, fifty-one thousand, eight hundred seven".