80840040880 has 40 divisors (see below), whose sum is σ = 187967469312. Its totient is φ = 32333543424.

The previous prime is 80840040871. The next prime is 80840040913. The reversal of 80840040880 is 8804004808.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×80840040880² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 1303537 + ... + 1364143.

Almost surely, 2^80840040880 is an apocalyptic number.

80840040880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80840040880 is an abundant number, since it is smaller than the sum of its proper divisors (107127428432).

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

80840040880 is a wasteful number, since it uses less digits than its factorization.

80840040880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77293 (or 77287 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The spelling of 80840040880 in words is "eighty billion, eight hundred forty million, forty thousand, eight hundred eighty".