8081601040 has 40 divisors (see below), whose sum is σ = 18801975168. Its totient is φ = 3230532480.

The previous prime is 8081601001. The next prime is 8081601127. The reversal of 8081601040 is 401061808.

It is a tau number, because it is divible by the number of its divisors (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, 93529 + ... + 157831.

Almost surely, 2^8081601040 is an apocalyptic number.

8081601040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8081601040 is an abundant number, since it is smaller than the sum of its proper divisors (10720374128).

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

8081601040 is a wasteful number, since it uses less digits than its factorization.

8081601040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65887 (or 65881 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 8081601040 is about 89897.7254439733. The cubic root of 8081601040 is about 2006.7770962113. Note that the first 3 decimals are identical.

Adding to 8081601040 its reverse (401061808), we get a palindrome (8482662848).

The spelling of 8081601040 in words is "eight billion, eighty-one million, six hundred one thousand, forty".