78646690200 has 192 divisors, whose sum is σ = 262855676160. Its totient is φ = 19337310720.

The previous prime is 78646690189. The next prime is 78646690223. The reversal of 78646690200 is 209664687.

It is a self number, because there is not a number n which added to its sum of digits gives 78646690200.

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 47 ways as a sum of consecutive naturals, for example, 7537387 + ... + 7547813.

It is an arithmetic number, because the mean of its divisors is an integer number (1369039980).

Almost surely, 2^78646690200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78646690200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131427838080).

78646690200 is an abundant number, since it is smaller than the sum of its proper divisors (184208985960).

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

78646690200 is a wasteful number, since it uses less digits than its factorization.

78646690200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11426 (or 11417 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 78646690200 in words is "seventy-eight billion, six hundred forty-six million, six hundred ninety thousand, two hundred".