78718672147 has 2 divisors, whose sum is σ = 78718672148. Its totient is φ = 78718672146.

The previous prime is 78718672037. The next prime is 78718672163. The reversal of 78718672147 is 74127681787.

It is a strong prime.

It is an emirp because it is prime and its reverse (74127681787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78718672147 - 2²³ = 78710283539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78718672091 and 78718672100.

It is not a weakly prime, because it can be changed into another prime (78718672187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39359336073 + 39359336074.

It is an arithmetic number, because the mean of its divisors is an integer number (39359336074).

Almost surely, 2^78718672147 is an apocalyptic number.

78718672147 is a deficient number, since it is larger than the sum of its proper divisors (1).

78718672147 is an equidigital number, since it uses as much as digits as its factorization.

78718672147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7375872, while the sum is 58.

The spelling of 78718672147 in words is "seventy-eight billion, seven hundred eighteen million, six hundred seventy-two thousand, one hundred forty-seven".