27779340502429 has 2 divisors, whose sum is σ = 27779340502430. Its totient is φ = 27779340502428.

The previous prime is 27779340502409. The next prime is 27779340502447. The reversal of 27779340502429 is 92420504397772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17330943672025 + 10448396830404 = 4163045^2 + 3232398^2 .

It is a cyclic number.

It is not a de Polignac number, because 27779340502429 - 2³¹ = 27777193018781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27779340502409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13889670251214 + 13889670251215.

It is an arithmetic number, because the mean of its divisors is an integer number (13889670251215).

Almost surely, 2^{27779340502429} is an apocalyptic number.

It is an amenable number.

27779340502429 is a deficient number, since it is larger than the sum of its proper divisors (1).

27779340502429 is an equidigital number, since it uses as much as digits as its factorization.

27779340502429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53343360, while the sum is 61.

The spelling of 27779340502429 in words is "twenty-seven trillion, seven hundred seventy-nine billion, three hundred forty million, five hundred two thousand, four hundred twenty-nine".