78694973194 has 8 divisors (see below), whose sum is σ = 118049188320. Its totient is φ = 39345243756.

The previous prime is 78694973183. The next prime is 78694973219. The reversal of 78694973194 is 49137949687.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077214 + ... + 1147945.

It is an arithmetic number, because the mean of its divisors is an integer number (14756148540).

Almost surely, 2^78694973194 is an apocalyptic number.

78694973194 is a deficient number, since it is larger than the sum of its proper divisors (39354215126).

78694973194 is a wasteful number, since it uses less digits than its factorization.

78694973194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242844.

The product of its digits is 82301184, while the sum is 67.

The spelling of 78694973194 in words is "seventy-eight billion, six hundred ninety-four million, nine hundred seventy-three thousand, one hundred ninety-four".