78016518 has 24 divisors (see below), whose sum is σ = 170782248. Its totient is φ = 25736832.

The previous prime is 78016517. The next prime is 78016537. The reversal of 78016518 is 81561087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78016513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20596 + ... + 24087.

It is an arithmetic number, because the mean of its divisors is an integer number (7115927).

Almost surely, 2^78016518 is an apocalyptic number.

78016518 is an abundant number, since it is smaller than the sum of its proper divisors (92765730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78016518 is a wasteful number, since it uses less digits than its factorization.

78016518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44788 (or 44785 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 78016518 is about 8832.6959644267. The cubic root of 78016518 is about 427.2960266291.

The spelling of 78016518 in words is "seventy-eight million, sixteen thousand, five hundred eighteen".