78804550099 has 8 divisors (see below), whose sum is σ = 86189603760. Its totient is φ = 71456330400.

The previous prime is 78804550079. The next prime is 78804550177. The reversal of 78804550099 is 99005540887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78804550099 - 2⁵ = 78804550067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78804550079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9204012 + ... + 9212569.

It is an arithmetic number, because the mean of its divisors is an integer number (10773700470).

Almost surely, 2^78804550099 is an apocalyptic number.

78804550099 is a deficient number, since it is larger than the sum of its proper divisors (7385053661).

78804550099 is a wasteful number, since it uses less digits than its factorization.

78804550099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18416981.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 78804550099 in words is "seventy-eight billion, eight hundred four million, five hundred fifty thousand, ninety-nine".