78724199000 has 32 divisors (see below), whose sum is σ = 184214628000. Its totient is φ = 31489679200.

The previous prime is 78724198999. The next prime is 78724199011. The reversal of 78724199000 is 99142787.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39361100 + ... + 39363099.

It is an arithmetic number, because the mean of its divisors is an integer number (5756707125).

Almost surely, 2^78724199000 is an apocalyptic number.

It is an amenable number.

78724199000 is an abundant number, since it is smaller than the sum of its proper divisors (105490429000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78724199000 is a wasteful number, since it uses less digits than its factorization.

78724199000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78724220 (or 78724206 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 78724199000 in words is "seventy-eight billion, seven hundred twenty-four million, one hundred ninety-nine thousand".