80216666718 has 128 divisors (see below), whose sum is σ = 174596083200. Its totient is φ = 24479059968.

The previous prime is 80216666681. The next prime is 80216666801. The reversal of 80216666718 is 81766661208.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 261291921 + ... + 261292227.

It is an arithmetic number, because the mean of its divisors is an integer number (1364031900).

Almost surely, 2^80216666718 is an apocalyptic number.

80216666718 is an abundant number, since it is smaller than the sum of its proper divisors (94379416482).

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

80216666718 is a wasteful number, since it uses less digits than its factorization.

80216666718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 80216666718 in words is "eighty billion, two hundred sixteen million, six hundred sixty-six thousand, seven hundred eighteen".