77434130723 has 2 divisors, whose sum is σ = 77434130724. Its totient is φ = 77434130722.

The previous prime is 77434130717. The next prime is 77434130729. The reversal of 77434130723 is 32703143477.

It is a balanced prime because it is at equal distance from previous prime (77434130717) and next prime (77434130729).

It is an emirp because it is prime and its reverse (32703143477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77434130723 - 2¹⁸ = 77433868579 is a prime.

It is not a weakly prime, because it can be changed into another prime (77434130729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38717065361 + 38717065362.

It is an arithmetic number, because the mean of its divisors is an integer number (38717065362).

Almost surely, 2^77434130723 is an apocalyptic number.

77434130723 is a deficient number, since it is larger than the sum of its proper divisors (1).

77434130723 is an equidigital number, since it uses as much as digits as its factorization.

77434130723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 41.

The spelling of 77434130723 in words is "seventy-seven billion, four hundred thirty-four million, one hundred thirty thousand, seven hundred twenty-three".