8011378517044 has 18 divisors (see below), whose sum is σ = 16308877695810. Its totient is φ = 3433447935792.

The previous prime is 8011378517041. The next prime is 8011378517167. The reversal of 8011378517044 is 4407158731108.

It can be written as a sum of positive squares in only one way, i.e., 4867892068900 + 3143486448144 = 2206330^2 + 1772988^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8011378517041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20437189899 + ... + 20437190290.

Almost surely, 2^{8011378517044} is an apocalyptic number.

It is an amenable number.

8011378517044 is an abundant number, since it is smaller than the sum of its proper divisors (8297499178766).

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

8011378517044 is a wasteful number, since it uses less digits than its factorization.

8011378517044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40874380207 (or 40874380198 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 8011378517044 in words is "eight trillion, eleven billion, three hundred seventy-eight million, five hundred seventeen thousand, forty-four".