27931049285779 has 2 divisors, whose sum is σ = 27931049285780. Its totient is φ = 27931049285778.

The previous prime is 27931049285759. The next prime is 27931049285911. The reversal of 27931049285779 is 97758294013972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27931049285779 - 2²⁵ = 27931015731347 is a prime.

It is not a weakly prime, because it can be changed into another prime (27931049285759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13965524642889 + 13965524642890.

It is an arithmetic number, because the mean of its divisors is an integer number (13965524642890).

Almost surely, 2^{27931049285779} is an apocalyptic number.

27931049285779 is a deficient number, since it is larger than the sum of its proper divisors (1).

27931049285779 is an equidigital number, since it uses as much as digits as its factorization.

27931049285779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480090240, while the sum is 73.

The spelling of 27931049285779 in words is "twenty-seven trillion, nine hundred thirty-one billion, forty-nine million, two hundred eighty-five thousand, seven hundred seventy-nine".