8111788872 has 64 divisors (see below), whose sum is σ = 22147248960. Its totient is φ = 2455430400.

The previous prime is 8111788871. The next prime is 8111788933. The reversal of 8111788872 is 2788871118.

It is a super-2 number, since 2×8111788872² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8111788871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232098 + ... + 264750.

It is an arithmetic number, because the mean of its divisors is an integer number (346050765).

Almost surely, 2^8111788872 is an apocalyptic number.

It is an amenable number.

8111788872 is an abundant number, since it is smaller than the sum of its proper divisors (14035460088).

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

8111788872 is a wasteful number, since it uses less digits than its factorization.

8111788872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33614 (or 33610 counting only the distinct ones).

The product of its digits is 401408, while the sum is 51.

The square root of 8111788872 is about 90065.4699204973. The cubic root of 8111788872 is about 2009.2726815807.

The spelling of 8111788872 in words is "eight billion, one hundred eleven million, seven hundred eighty-eight thousand, eight hundred seventy-two".