40040112112 has 160 divisors (see below), whose sum is σ = 105928220160. Its totient is φ = 14155637760.

The previous prime is 40040112103. The next prime is 40040112131. The reversal of 40040112112 is 21121104004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 923758 + ... + 966130.

It is an arithmetic number, because the mean of its divisors is an integer number (662051376).

Almost surely, 2^40040112112 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 40040112112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52964110080).

40040112112 is an abundant number, since it is smaller than the sum of its proper divisors (65888108048).

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

40040112112 is a wasteful number, since it uses less digits than its factorization.

40040112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42471 (or 42465 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 40040112112 its reverse (21121104004), we get a palindrome (61161216116).

The spelling of 40040112112 in words is "forty billion, forty million, one hundred twelve thousand, one hundred twelve".