77117647319 has 2 divisors, whose sum is σ = 77117647320. Its totient is φ = 77117647318.

The previous prime is 77117647289. The next prime is 77117647367. The reversal of 77117647319 is 91374671177.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77117647319 is a prime.

It is a super-2 number, since 2×77117647319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77117647819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38558823659 + 38558823660.

It is an arithmetic number, because the mean of its divisors is an integer number (38558823660).

Almost surely, 2^77117647319 is an apocalyptic number.

77117647319 is a deficient number, since it is larger than the sum of its proper divisors (1).

77117647319 is an equidigital number, since it uses as much as digits as its factorization.

77117647319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555848, while the sum is 53.

The spelling of 77117647319 in words is "seventy-seven billion, one hundred seventeen million, six hundred forty-seven thousand, three hundred nineteen".