77173045476227 has 2 divisors, whose sum is σ = 77173045476228. Its totient is φ = 77173045476226.

The previous prime is 77173045476221. The next prime is 77173045476259. The reversal of 77173045476227 is 72267454037177.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77173045476227 - 2¹⁴ = 77173045459843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77173045476227.

It is not a weakly prime, because it can be changed into another prime (77173045476221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38586522738113 + 38586522738114.

It is an arithmetic number, because the mean of its divisors is an integer number (38586522738114).

Almost surely, 2^{77173045476227} is an apocalyptic number.

77173045476227 is a deficient number, since it is larger than the sum of its proper divisors (1).

77173045476227 is an equidigital number, since it uses as much as digits as its factorization.

77173045476227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96808320, while the sum is 62.

The spelling of 77173045476227 in words is "seventy-seven trillion, one hundred seventy-three billion, forty-five million, four hundred seventy-six thousand, two hundred twenty-seven".