77068407473 has 2 divisors, whose sum is σ = 77068407474. Its totient is φ = 77068407472.

The previous prime is 77068407463. The next prime is 77068407509. The reversal of 77068407473 is 37470486077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76105360384 + 963047089 = 275872^2 + 31033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77068407473 is a prime.

It is not a weakly prime, because it can be changed into another prime (77068407433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38534203736 + 38534203737.

It is an arithmetic number, because the mean of its divisors is an integer number (38534203737).

Almost surely, 2^77068407473 is an apocalyptic number.

It is an amenable number.

77068407473 is a deficient number, since it is larger than the sum of its proper divisors (1).

77068407473 is an equidigital number, since it uses as much as digits as its factorization.

77068407473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5531904, while the sum is 53.

The spelling of 77068407473 in words is "seventy-seven billion, sixty-eight million, four hundred seven thousand, four hundred seventy-three".