77000076427 has 2 divisors, whose sum is σ = 77000076428. Its totient is φ = 77000076426.

The previous prime is 77000076389. The next prime is 77000076451. The reversal of 77000076427 is 72467000077.

It is a strong prime.

It is an emirp because it is prime and its reverse (72467000077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77000076427 - 2¹⁹ = 76999552139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77000076427.

It is not a weakly prime, because it can be changed into another prime (77000076467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38500038213 + 38500038214.

It is an arithmetic number, because the mean of its divisors is an integer number (38500038214).

Almost surely, 2^77000076427 is an apocalyptic number.

77000076427 is a deficient number, since it is larger than the sum of its proper divisors (1).

77000076427 is an equidigital number, since it uses as much as digits as its factorization.

77000076427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115248, while the sum is 40.

The spelling of 77000076427 in words is "seventy-seven billion, seventy-six thousand, four hundred twenty-seven".