77393120047 has 2 divisors, whose sum is σ = 77393120048. Its totient is φ = 77393120046.

The previous prime is 77393119963. The next prime is 77393120083. The reversal of 77393120047 is 74002139377.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77393120047 - 2³¹ = 75245636399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77393119985 and 77393120012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77393120747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38696560023 + 38696560024.

It is an arithmetic number, because the mean of its divisors is an integer number (38696560024).

Almost surely, 2^77393120047 is an apocalyptic number.

77393120047 is a deficient number, since it is larger than the sum of its proper divisors (1).

77393120047 is an equidigital number, since it uses as much as digits as its factorization.

77393120047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 43.

The spelling of 77393120047 in words is "seventy-seven billion, three hundred ninety-three million, one hundred twenty thousand, forty-seven".