26506425977 has 2 divisors, whose sum is σ = 26506425978. Its totient is φ = 26506425976.

The previous prime is 26506425947. The next prime is 26506425983. The reversal of 26506425977 is 77952460562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16303203856 + 10203222121 = 127684^2 + 101011^2 .

It is a cyclic number.

It is not a de Polignac number, because 26506425977 - 2²⁰ = 26505377401 is a prime.

It is not a weakly prime, because it can be changed into another prime (26506425947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13253212988 + 13253212989.

It is an arithmetic number, because the mean of its divisors is an integer number (13253212989).

Almost surely, 2^26506425977 is an apocalyptic number.

It is an amenable number.

26506425977 is a deficient number, since it is larger than the sum of its proper divisors (1).

26506425977 is an equidigital number, since it uses as much as digits as its factorization.

26506425977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6350400, while the sum is 53.

The spelling of 26506425977 in words is "twenty-six billion, five hundred six million, four hundred twenty-five thousand, nine hundred seventy-seven".