78216342608318 has 8 divisors (see below), whose sum is σ = 117430306985160. Its totient is φ = 39072906946600.

The previous prime is 78216342608191. The next prime is 78216342608329. The reversal of 78216342608318 is 81380624361287.

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

It is a super-2 number, since 2×78216342608318² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17632176008 + ... + 17632180443.

It is an arithmetic number, because the mean of its divisors is an integer number (14678788373145).

Almost surely, 2^{78216342608318} is an apocalyptic number.

78216342608318 is a deficient number, since it is larger than the sum of its proper divisors (39213964376842).

78216342608318 is a wasteful number, since it uses less digits than its factorization.

78216342608318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35264357562.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 78216342608318 in words is "seventy-eight trillion, two hundred sixteen billion, three hundred forty-two million, six hundred eight thousand, three hundred eighteen".