78743546872 has 16 divisors (see below), whose sum is σ = 148090210200. Its totient is φ = 39252824160.

The previous prime is 78743546867. The next prime is 78743546897. The reversal of 78743546872 is 27864534787.

It is a self number, because there is not a number n which added to its sum of digits gives 78743546872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14865847 + ... + 14871142.

Almost surely, 2^78743546872 is an apocalyptic number.

It is an amenable number.

78743546872 is a deficient number, since it is larger than the sum of its proper divisors (69346663328).

78743546872 is a wasteful number, since it uses less digits than its factorization.

78743546872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29737326 (or 29737322 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 61.

The spelling of 78743546872 in words is "seventy-eight billion, seven hundred forty-three million, five hundred forty-six thousand, eight hundred seventy-two".