26450720651 has 2 divisors, whose sum is σ = 26450720652. Its totient is φ = 26450720650.

The previous prime is 26450720599. The next prime is 26450720731. The reversal of 26450720651 is 15602705462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26450720651 - 2⁶ = 26450720587 is a prime.

It is not a weakly prime, because it can be changed into another prime (26450720551) 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, 13225360325 + 13225360326.

It is an arithmetic number, because the mean of its divisors is an integer number (13225360326).

Almost surely, 2^26450720651 is an apocalyptic number.

26450720651 is a deficient number, since it is larger than the sum of its proper divisors (1).

26450720651 is an equidigital number, since it uses as much as digits as its factorization.

26450720651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 26450720651 in words is "twenty-six billion, four hundred fifty million, seven hundred twenty thousand, six hundred fifty-one".