8011544140 has 96 divisors (see below), whose sum is σ = 17928187200. Its totient is φ = 3002904576.

The previous prime is 8011544137. The next prime is 8011544153. The reversal of 8011544140 is 414451108.

It is a junction number, because it is equal to n+sod(n) for n = 8011544099 and 8011544108.

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, 2321136 + ... + 2324584.

It is an arithmetic number, because the mean of its divisors is an integer number (186751950).

Almost surely, 2^8011544140 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 8011544140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8964093600).

8011544140 is an abundant number, since it is smaller than the sum of its proper divisors (9916643060).

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

8011544140 is a wasteful number, since it uses less digits than its factorization.

8011544140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 8011544140 is about 89507.2295404120. The cubic root of 8011544140 is about 2000.9615493040.

Adding to 8011544140 its reverse (414451108), we get a palindrome (8425995248).

The spelling of 8011544140 in words is "eight billion, eleven million, five hundred forty-four thousand, one hundred forty".