26787570473 has 2 divisors, whose sum is σ = 26787570474. Its totient is φ = 26787570472.

The previous prime is 26787570427. The next prime is 26787570503. The reversal of 26787570473 is 37407578762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23916003904 + 2871566569 = 154648^2 + 53587^2 .

It is a cyclic number.

It is not a de Polignac number, because 26787570473 - 2⁸ = 26787570217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26787770473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13393785236 + 13393785237.

It is an arithmetic number, because the mean of its divisors is an integer number (13393785237).

Almost surely, 2^26787570473 is an apocalyptic number.

It is an amenable number.

26787570473 is a deficient number, since it is larger than the sum of its proper divisors (1).

26787570473 is an equidigital number, since it uses as much as digits as its factorization.

26787570473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 26787570473 in words is "twenty-six billion, seven hundred eighty-seven million, five hundred seventy thousand, four hundred seventy-three".