78677414147 has 4 divisors (see below), whose sum is σ = 78678150720. Its totient is φ = 78676677576.

The previous prime is 78677414143. The next prime is 78677414171. The reversal of 78677414147 is 74141477687.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74141477687 = 109 ⋅680197043.

It is a cyclic number.

It is not a de Polignac number, because 78677414147 - 2² = 78677414143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78677414092 and 78677414101.

It is not an unprimeable number, because it can be changed into a prime (78677414143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173843 + ... + 433100.

It is an arithmetic number, because the mean of its divisors is an integer number (19669537680).

Almost surely, 2^78677414147 is an apocalyptic number.

78677414147 is a deficient number, since it is larger than the sum of its proper divisors (736573).

78677414147 is a wasteful number, since it uses less digits than its factorization.

78677414147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736572.

The product of its digits is 7375872, while the sum is 56.

The spelling of 78677414147 in words is "seventy-eight billion, six hundred seventy-seven million, four hundred fourteen thousand, one hundred forty-seven".