40118643811 has 8 divisors (see below), whose sum is σ = 42234915600. Its totient is φ = 38002848480.

The previous prime is 40118643793. The next prime is 40118643841. The reversal of 40118643811 is 11834681104.

40118643811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40118643811 - 2¹¹ = 40118641763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40118643841) 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, 60705 + ... + 289693.

It is an arithmetic number, because the mean of its divisors is an integer number (5279364450).

Almost surely, 2^40118643811 is an apocalyptic number.

40118643811 is a deficient number, since it is larger than the sum of its proper divisors (2116271789).

40118643811 is a wasteful number, since it uses less digits than its factorization.

40118643811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238229.

The product of its (nonzero) digits is 18432, while the sum is 37.

It can be divided in two parts, 40118 and 643811, that added together give a square (683929 = 827²).

The spelling of 40118643811 in words is "forty billion, one hundred eighteen million, six hundred forty-three thousand, eight hundred eleven".