40118969109 has 4 divisors (see below), whose sum is σ = 53491958816. Its totient is φ = 26745979404.

The previous prime is 40118969041. The next prime is 40118969221. The reversal of 40118969109 is 90196981104.

It is a happy number.

40118969109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40118969109 - 2⁸ = 40118968853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40118949109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6686494849 + ... + 6686494854.

It is an arithmetic number, because the mean of its divisors is an integer number (13372989704).

Almost surely, 2^40118969109 is an apocalyptic number.

It is an amenable number.

40118969109 is a deficient number, since it is larger than the sum of its proper divisors (13372989707).

40118969109 is a wasteful number, since it uses less digits than its factorization.

40118969109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13372989706.

The product of its (nonzero) digits is 139968, while the sum is 48.

The spelling of 40118969109 in words is "forty billion, one hundred eighteen million, nine hundred sixty-nine thousand, one hundred nine".