78934495218 has 16 divisors (see below), whose sum is σ = 157872635616. Its totient is φ = 26310890880.

The previous prime is 78934495169. The next prime is 78934495219. The reversal of 78934495218 is 81259443987.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78934495219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188205 + ... + 439647.

It is an arithmetic number, because the mean of its divisors is an integer number (9867039726).

Almost surely, 2^78934495218 is an apocalyptic number.

78934495218 is an abundant number, since it is smaller than the sum of its proper divisors (78938140398).

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

78934495218 is a wasteful number, since it uses less digits than its factorization.

78934495218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303769.

The product of its digits is 17418240, while the sum is 60.

The spelling of 78934495218 in words is "seventy-eight billion, nine hundred thirty-four million, four hundred ninety-five thousand, two hundred eighteen".