77422321027 has 2 divisors, whose sum is σ = 77422321028. Its totient is φ = 77422321026.

The previous prime is 77422320973. The next prime is 77422321051. The reversal of 77422321027 is 72012322477.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77422321027 is a prime.

It is not a weakly prime, because it can be changed into another prime (77422321127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38711160513 + 38711160514.

It is an arithmetic number, because the mean of its divisors is an integer number (38711160514).

Almost surely, 2^77422321027 is an apocalyptic number.

77422321027 is a deficient number, since it is larger than the sum of its proper divisors (1).

77422321027 is an equidigital number, since it uses as much as digits as its factorization.

77422321027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 37.

The spelling of 77422321027 in words is "seventy-seven billion, four hundred twenty-two million, three hundred twenty-one thousand, twenty-seven".