80686848640 has 64 divisors (see below), whose sum is σ = 192927051360. Its totient is φ = 32268874752.

The previous prime is 80686848607. The next prime is 80686848661. The reversal of 80686848640 is 4684868608.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5872819 + ... + 5886541.

Almost surely, 2^80686848640 is an apocalyptic number.

80686848640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80686848640 is an abundant number, since it is smaller than the sum of its proper divisors (112240202720).

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

80686848640 is a wasteful number, since it uses less digits than its factorization.

80686848640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22929 (or 22917 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 58.

The spelling of 80686848640 in words is "eighty billion, six hundred eighty-six million, eight hundred forty-eight thousand, six hundred forty".