78076818216 has 80 divisors (see below), whose sum is σ = 221767619040. Its totient is φ = 25659033120.

The previous prime is 78076818181. The next prime is 78076818217. The reversal of 78076818216 is 61281867087.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (78076818217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 802506 + ... + 894521.

It is an arithmetic number, because the mean of its divisors is an integer number (2772095238).

Almost surely, 2^78076818216 is an apocalyptic number.

It is an amenable number.

78076818216 is an abundant number, since it is smaller than the sum of its proper divisors (143690800824).

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

78076818216 is a wasteful number, since it uses less digits than its factorization.

78076818216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697116 (or 1697103 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The spelling of 78076818216 in words is "seventy-eight billion, seventy-six million, eight hundred eighteen thousand, two hundred sixteen".