80128217064 has 48 divisors (see below), whose sum is σ = 233025940800. Its totient is φ = 22893775968.

The previous prime is 80128217063. The next prime is 80128217137. The reversal of 80128217064 is 46071282108.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80128217063) 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, 34066944 + ... + 34069295.

It is an arithmetic number, because the mean of its divisors is an integer number (4854707100).

Almost surely, 2^80128217064 is an apocalyptic number.

80128217064 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

80128217064 is an abundant number, since it is smaller than the sum of its proper divisors (152897723736).

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

80128217064 is a wasteful number, since it uses less digits than its factorization.

80128217064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68136262 (or 68136251 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 80128217064 in words is "eighty billion, one hundred twenty-eight million, two hundred seventeen thousand, sixty-four".