78548664844 has 48 divisors (see below), whose sum is σ = 151074772576. Its totient is φ = 35514547200.

The previous prime is 78548664841. The next prime is 78548664851. The reversal of 78548664844 is 44846684587.

It is not an unprimeable number, because it can be changed into a prime (78548664841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568324 + ... + 692884.

Almost surely, 2^78548664844 is an apocalyptic number.

It is an amenable number.

78548664844 is a deficient number, since it is larger than the sum of its proper divisors (72526107732).

78548664844 is a wasteful number, since it uses less digits than its factorization.

78548664844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124826 (or 124824 counting only the distinct ones).

The product of its digits is 165150720, while the sum is 64.

The spelling of 78548664844 in words is "seventy-eight billion, five hundred forty-eight million, six hundred sixty-four thousand, eight hundred forty-four".