40118643810 has 96 divisors (see below), whose sum is σ = 119309448960. Its totient is φ = 9162301824.

The previous prime is 40118643793. The next prime is 40118643841. The reversal of 40118643810 is 1834681104.

It is a happy number.

40118643810 is a `hidden beast` number, since 4 + 0 + 1 + 1 + 8 + 643 + 8 + 1 + 0 = 666.

It is a super-2 number, since 2×40118643810² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 744456 + ... + 796524.

It is an arithmetic number, because the mean of its divisors is an integer number (1242806760).

Almost surely, 2^40118643810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40118643810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59654724480).

40118643810 is an abundant number, since it is smaller than the sum of its proper divisors (79190805150).

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

40118643810 is a wasteful number, since it uses less digits than its factorization.

40118643810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53312 (or 53309 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 40118643810 in words is "forty billion, one hundred eighteen million, six hundred forty-three thousand, eight hundred ten".