10840993891 has 32 divisors (see below), whose sum is σ = 14456268288. Its totient is φ = 7885140480.

The previous prime is 10840993883. The next prime is 10840993901. The reversal of 10840993891 is 19839904801.

It is not a de Polignac number, because 10840993891 - 2³ = 10840993883 is a prime.

It is a super-3 number, since 3×10840993891³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (10840993391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14965 + ... + 148006.

It is an arithmetic number, because the mean of its divisors is an integer number (451758384).

Almost surely, 2^10840993891 is an apocalyptic number.

10840993891 is a deficient number, since it is larger than the sum of its proper divisors (3615274397).

10840993891 is a wasteful number, since it uses less digits than its factorization.

10840993891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163051.

The product of its (nonzero) digits is 559872, while the sum is 52.

The spelling of 10840993891 in words is "ten billion, eight hundred forty million, nine hundred ninety-three thousand, eight hundred ninety-one".