77624712947 has 2 divisors, whose sum is σ = 77624712948. Its totient is φ = 77624712946.

The previous prime is 77624712941. The next prime is 77624713027. The reversal of 77624712947 is 74921742677.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77624712947 - 2¹⁴ = 77624696563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77624712892 and 77624712901.

It is not a weakly prime, because it can be changed into another prime (77624712941) 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, 38812356473 + 38812356474.

It is an arithmetic number, because the mean of its divisors is an integer number (38812356474).

Almost surely, 2^77624712947 is an apocalyptic number.

77624712947 is a deficient number, since it is larger than the sum of its proper divisors (1).

77624712947 is an equidigital number, since it uses as much as digits as its factorization.

77624712947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8297856, while the sum is 56.

The spelling of 77624712947 in words is "seventy-seven billion, six hundred twenty-four million, seven hundred twelve thousand, nine hundred forty-seven".