80545709128 has 16 divisors (see below), whose sum is σ = 152489450880. Its totient is φ = 39881855568.

The previous prime is 80545709107. The next prime is 80545709177. The reversal of 80545709128 is 82190754508.

It is a happy number.

It is a super-2 number, since 2×80545709128² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48874000 + ... + 48875647.

It is an arithmetic number, because the mean of its divisors is an integer number (9530590680).

Almost surely, 2^80545709128 is an apocalyptic number.

It is an amenable number.

80545709128 is a deficient number, since it is larger than the sum of its proper divisors (71943741752).

80545709128 is a wasteful number, since it uses less digits than its factorization.

80545709128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97749756 (or 97749752 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 80545709128 in words is "eighty billion, five hundred forty-five million, seven hundred nine thousand, one hundred twenty-eight".