78835864166 has 4 divisors (see below), whose sum is σ = 118253796252. Its totient is φ = 39417932082.

The previous prime is 78835864123. The next prime is 78835864189. The reversal of 78835864166 is 66146853887.

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

It is a junction number, because it is equal to n+sod(n) for n = 78835864099 and 78835864108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19708966040 + ... + 19708966043.

It is an arithmetic number, because the mean of its divisors is an integer number (29563449063).

Almost surely, 2^78835864166 is an apocalyptic number.

78835864166 is a deficient number, since it is larger than the sum of its proper divisors (39417932086).

78835864166 is a wasteful number, since it uses less digits than its factorization.

78835864166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39417932085.

The product of its digits is 46448640, while the sum is 62.

The spelling of 78835864166 in words is "seventy-eight billion, eight hundred thirty-five million, eight hundred sixty-four thousand, one hundred sixty-six".