26866820951 has 2 divisors, whose sum is σ = 26866820952. Its totient is φ = 26866820950.

The previous prime is 26866820947. The next prime is 26866820957. The reversal of 26866820951 is 15902866862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26866820951 - 2² = 26866820947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26866820893 and 26866820902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26866820957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13433410475 + 13433410476.

It is an arithmetic number, because the mean of its divisors is an integer number (13433410476).

Almost surely, 2^26866820951 is an apocalyptic number.

26866820951 is a deficient number, since it is larger than the sum of its proper divisors (1).

26866820951 is an equidigital number, since it uses as much as digits as its factorization.

26866820951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 26866820951 in words is "twenty-six billion, eight hundred sixty-six million, eight hundred twenty thousand, nine hundred fifty-one".