78517168 has 30 divisors (see below), whose sum is σ = 155140244. Its totient is φ = 38495808.

The previous prime is 78517163. The next prime is 78517171. The reversal of 78517168 is 86171587.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (78517163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44071 + ... + 45817.

Almost surely, 2^78517168 is an apocalyptic number.

It is an amenable number.

78517168 is a deficient number, since it is larger than the sum of its proper divisors (76623076).

78517168 is a wasteful number, since it uses less digits than its factorization.

78517168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861 (or 1802 counting only the distinct ones).

The product of its digits is 94080, while the sum is 43.

The square root of 78517168 is about 8860.9913666587. The cubic root of 78517168 is about 428.2080974829.

The spelling of 78517168 in words is "seventy-eight million, five hundred seventeen thousand, one hundred sixty-eight".