80218677540 has 96 divisors (see below), whose sum is σ = 236519377920. Its totient is φ = 20258453376.

The previous prime is 80218677523. The next prime is 80218677557. The reversal of 80218677540 is 4577681208.

It is an interprime number because it is at equal distance from previous prime (80218677523) and next prime (80218677557).

It is a self number, because there is not a number n which added to its sum of digits gives 80218677540.

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, 3594697 + ... + 3616943.

It is an arithmetic number, because the mean of its divisors is an integer number (2463743520).

Almost surely, 2^80218677540 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 80218677540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118259688960).

80218677540 is an abundant number, since it is smaller than the sum of its proper divisors (156300700380).

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

80218677540 is a wasteful number, since it uses less digits than its factorization.

80218677540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25441 (or 25439 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 80218677540 in words is "eighty billion, two hundred eighteen million, six hundred seventy-seven thousand, five hundred forty".