26620386049 has 2 divisors, whose sum is σ = 26620386050. Its totient is φ = 26620386048.

The previous prime is 26620385989. The next prime is 26620386073. The reversal of 26620386049 is 94068302662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26614659600 + 5726449 = 163140^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 26620386049 - 2³¹ = 24472902401 is a prime.

It is not a weakly prime, because it can be changed into another prime (26620380049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13310193024 + 13310193025.

It is an arithmetic number, because the mean of its divisors is an integer number (13310193025).

Almost surely, 2^26620386049 is an apocalyptic number.

It is an amenable number.

26620386049 is a deficient number, since it is larger than the sum of its proper divisors (1).

26620386049 is an equidigital number, since it uses as much as digits as its factorization.

26620386049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 26620386049 in words is "twenty-six billion, six hundred twenty million, three hundred eighty-six thousand, forty-nine".