78885896198 has 4 divisors (see below), whose sum is σ = 118328844300. Its totient is φ = 39442948098.

The previous prime is 78885896183. The next prime is 78885896207. The reversal of 78885896198 is 89169858887.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 19721474048 + ... + 19721474051.

It is an arithmetic number, because the mean of its divisors is an integer number (29582211075).

Almost surely, 2^78885896198 is an apocalyptic number.

78885896198 is a deficient number, since it is larger than the sum of its proper divisors (39442948102).

78885896198 is a wasteful number, since it uses less digits than its factorization.

78885896198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39442948101.

The product of its digits is 557383680, while the sum is 77.

The spelling of 78885896198 in words is "seventy-eight billion, eight hundred eighty-five million, eight hundred ninety-six thousand, one hundred ninety-eight".