26424542057 has 2 divisors, whose sum is σ = 26424542058. Its totient is φ = 26424542056.

The previous prime is 26424542021. The next prime is 26424542071. The reversal of 26424542057 is 75024542462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18610689241 + 7813852816 = 136421^2 + 88396^2 .

It is a cyclic number.

It is not a de Polignac number, because 26424542057 - 2¹⁸ = 26424279913 is a prime.

It is not a weakly prime, because it can be changed into another prime (26424542077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13212271028 + 13212271029.

It is an arithmetic number, because the mean of its divisors is an integer number (13212271029).

Almost surely, 2^26424542057 is an apocalyptic number.

It is an amenable number.

26424542057 is a deficient number, since it is larger than the sum of its proper divisors (1).

26424542057 is an equidigital number, since it uses as much as digits as its factorization.

26424542057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 41.

The spelling of 26424542057 in words is "twenty-six billion, four hundred twenty-four million, five hundred forty-two thousand, fifty-seven".