77398306859 has 2 divisors, whose sum is σ = 77398306860. Its totient is φ = 77398306858.

The previous prime is 77398306819. The next prime is 77398306879. The reversal of 77398306859 is 95860389377.

It is a strong prime.

It is an emirp because it is prime and its reverse (95860389377) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77398306859 is a prime.

It is a super-3 number, since 3×77398306859³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77398306795 and 77398306804.

It is not a weakly prime, because it can be changed into another prime (77398306819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38699153429 + 38699153430.

It is an arithmetic number, because the mean of its divisors is an integer number (38699153430).

Almost surely, 2^77398306859 is an apocalyptic number.

77398306859 is a deficient number, since it is larger than the sum of its proper divisors (1).

77398306859 is an equidigital number, since it uses as much as digits as its factorization.

77398306859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 77398306859 in words is "seventy-seven billion, three hundred ninety-eight million, three hundred six thousand, eight hundred fifty-nine".