10111891008 has 112 divisors (see below), whose sum is σ = 28045233216. Its totient is φ = 3211837440.

The previous prime is 10111891007. The next prime is 10111891019. The reversal of 10111891008 is 80019811101.

It is not an unprimeable number, because it can be changed into a prime (10111891007) 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, 323560 + ... + 353432.

It is an arithmetic number, because the mean of its divisors is an integer number (250403868).

Almost surely, 2^10111891008 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 10111891008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14022616608).

10111891008 is an abundant number, since it is smaller than the sum of its proper divisors (17933342208).

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

10111891008 is a wasteful number, since it uses less digits than its factorization.

10111891008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29972 (or 29962 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 30.

The spelling of 10111891008 in words is "ten billion, one hundred eleven million, eight hundred ninety-one thousand, eight".