77038272229 has 2 divisors, whose sum is σ = 77038272230. Its totient is φ = 77038272228.

The previous prime is 77038272217. The next prime is 77038272239. The reversal of 77038272229 is 92227283077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39274123329 + 37764148900 = 198177^2 + 194330^2 .

It is a cyclic number.

It is not a de Polignac number, because 77038272229 - 2¹⁷ = 77038141157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77038272239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38519136114 + 38519136115.

It is an arithmetic number, because the mean of its divisors is an integer number (38519136115).

Almost surely, 2^77038272229 is an apocalyptic number.

It is an amenable number.

77038272229 is a deficient number, since it is larger than the sum of its proper divisors (1).

77038272229 is an equidigital number, since it uses as much as digits as its factorization.

77038272229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 77038272229 in words is "seventy-seven billion, thirty-eight million, two hundred seventy-two thousand, two hundred twenty-nine".