77340430771 has 2 divisors, whose sum is σ = 77340430772. Its totient is φ = 77340430770.

The previous prime is 77340430757. The next prime is 77340430787. The reversal of 77340430771 is 17703404377.

It is a weak prime.

It is an emirp because it is prime and its reverse (17703404377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77340430771 - 2³³ = 68750496179 is a prime.

It is not a weakly prime, because it can be changed into another prime (77340430171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38670215385 + 38670215386.

It is an arithmetic number, because the mean of its divisors is an integer number (38670215386).

Almost surely, 2^77340430771 is an apocalyptic number.

77340430771 is a deficient number, since it is larger than the sum of its proper divisors (1).

77340430771 is an equidigital number, since it uses as much as digits as its factorization.

77340430771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345744, while the sum is 43.

The spelling of 77340430771 in words is "seventy-seven billion, three hundred forty million, four hundred thirty thousand, seven hundred seventy-one".