80540748780 has 24 divisors (see below), whose sum is σ = 225514096752. Its totient is φ = 21477532992.

The previous prime is 80540748773. The next prime is 80540748793. The reversal of 80540748780 is 8784704508.

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 7 ways as a sum of consecutive naturals, for example, 671172847 + ... + 671172966.

It is an arithmetic number, because the mean of its divisors is an integer number (9396420698).

Almost surely, 2^80540748780 is an apocalyptic number.

It is an amenable number.

80540748780 is an abundant number, since it is smaller than the sum of its proper divisors (144973347972).

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

80540748780 is a wasteful number, since it uses less digits than its factorization.

80540748780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342345825 (or 1342345823 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 51.

The spelling of 80540748780 in words is "eighty billion, five hundred forty million, seven hundred forty-eight thousand, seven hundred eighty".