78465553568678 has 4 divisors (see below), whose sum is σ = 117698330353020. Its totient is φ = 39232776784338.

The previous prime is 78465553568653. The next prime is 78465553568729. The reversal of 78465553568678 is 87686535556487.

78465553568678 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 78465553568596 and 78465553568605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19616388392168 + ... + 19616388392171.

It is an arithmetic number, because the mean of its divisors is an integer number (29424582588255).

Almost surely, 2^{78465553568678} is an apocalyptic number.

78465553568678 is a deficient number, since it is larger than the sum of its proper divisors (39232776784342).

78465553568678 is a wasteful number, since it uses less digits than its factorization.

78465553568678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39232776784341.

The product of its digits is 40642560000, while the sum is 83.

The spelling of 78465553568678 in words is "seventy-eight trillion, four hundred sixty-five billion, five hundred fifty-three million, five hundred sixty-eight thousand, six hundred seventy-eight".