78194030678 has 8 divisors (see below), whose sum is σ = 117737020368. Its totient is φ = 38948357224.

The previous prime is 78194030659. The next prime is 78194030689. The reversal of 78194030678 is 87603049187.

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

It is a super-2 number, since 2×78194030678² (a number of 23 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 74328401 + ... + 74329452.

It is an arithmetic number, because the mean of its divisors is an integer number (14717127546).

Almost surely, 2^78194030678 is an apocalyptic number.

78194030678 is a deficient number, since it is larger than the sum of its proper divisors (39542989690).

78194030678 is a wasteful number, since it uses less digits than its factorization.

78194030678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148658118.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 78194030678 in words is "seventy-eight billion, one hundred ninety-four million, thirty thousand, six hundred seventy-eight".