80108138440 has 128 divisors (see below), whose sum is σ = 200680830720. Its totient is φ = 28535270400.

The previous prime is 80108138393. The next prime is 80108138459. The reversal of 80108138440 is 4483180108.

It is a self number, because there is not a number n which added to its sum of digits gives 80108138440.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4896514 + ... + 4912846.

It is an arithmetic number, because the mean of its divisors is an integer number (1567818990).

Almost surely, 2^80108138440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80108138440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100340415360).

80108138440 is an abundant number, since it is smaller than the sum of its proper divisors (120572692280).

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

80108138440 is a wasteful number, since it uses less digits than its factorization.

80108138440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16583 (or 16579 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 80108138440 in words is "eighty billion, one hundred eight million, one hundred thirty-eight thousand, four hundred forty".