8081540080 has 40 divisors (see below), whose sum is σ = 18798988752. Its totient is φ = 3230997504.

The previous prime is 8081540059. The next prime is 8081540081. The reversal of 8081540080 is 800451808.

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

It is a super-2 number, since 2×8081540080² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081540081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142392 + ... + 190888.

Almost surely, 2^8081540080 is an apocalyptic number.

8081540080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8081540080 is an abundant number, since it is smaller than the sum of its proper divisors (10717448672).

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

8081540080 is a wasteful number, since it uses less digits than its factorization.

8081540080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50593 (or 50587 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 8081540080 is about 89897.3863913740. The cubic root of 8081540080 is about 2006.7720504521.

Adding to 8081540080 its reverse (800451808), we get a palindrome (8881991888).

The spelling of 8081540080 in words is "eight billion, eighty-one million, five hundred forty thousand, eighty".