26240464057 has 2 divisors, whose sum is σ = 26240464058. Its totient is φ = 26240464056.

The previous prime is 26240464037. The next prime is 26240464069. The reversal of 26240464057 is 75046404262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26236224576 + 4239481 = 161976^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 26240464057 - 2¹⁹ = 26239939769 is a prime.

It is not a weakly prime, because it can be changed into another prime (26240464037) 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, 13120232028 + 13120232029.

It is an arithmetic number, because the mean of its divisors is an integer number (13120232029).

Almost surely, 2^26240464057 is an apocalyptic number.

It is an amenable number.

26240464057 is a deficient number, since it is larger than the sum of its proper divisors (1).

26240464057 is an equidigital number, since it uses as much as digits as its factorization.

26240464057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 26240464057 in words is "twenty-six billion, two hundred forty million, four hundred sixty-four thousand, fifty-seven".