78813320547 has 16 divisors (see below), whose sum is σ = 113207698688. Its totient is φ = 48483424800.

The previous prime is 78813320527. The next prime is 78813320629. The reversal of 78813320547 is 74502331887.

It is not a de Polignac number, because 78813320547 - 2⁶ = 78813320483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78813320496 and 78813320505.

It is not an unprimeable number, because it can be changed into a prime (78813320527) 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 in 15 ways as a sum of consecutive naturals, for example, 243223 + ... + 465600.

It is an arithmetic number, because the mean of its divisors is an integer number (7075481168).

Almost surely, 2^78813320547 is an apocalyptic number.

78813320547 is a deficient number, since it is larger than the sum of its proper divisors (34394378141).

78813320547 is a wasteful number, since it uses less digits than its factorization.

78813320547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711690.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 78813320547 in words is "seventy-eight billion, eight hundred thirteen million, three hundred twenty thousand, five hundred forty-seven".