840011109998 has 16 divisors (see below), whose sum is σ = 1268400466080. Its totient is φ = 417219648000.

The previous prime is 840011109997. The next prime is 840011110021. The reversal of 840011109998 is 899901110048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840011109997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1979738 + ... + 2366301.

It is an arithmetic number, because the mean of its divisors is an integer number (79275029130).

Almost surely, 2^840011109998 is an apocalyptic number.

840011109998 is a deficient number, since it is larger than the sum of its proper divisors (428389356082).

840011109998 is a wasteful number, since it uses less digits than its factorization.

840011109998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346683.

The product of its (nonzero) digits is 186624, while the sum is 50.

Adding to 840011109998 its sum of digits (50), we get a palindrome (840011110048).

The spelling of 840011109998 in words is "eight hundred forty billion, eleven million, one hundred nine thousand, nine hundred ninety-eight".