40421734818 has 8 divisors (see below), whose sum is σ = 80843469648. Its totient is φ = 13473911604.

The previous prime is 40421734763. The next prime is 40421734823. The reversal of 40421734818 is 81843712404.

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

40421734818 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 40421734818.

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 3 ways as a sum of consecutive naturals, for example, 3368477896 + ... + 3368477907.

It is an arithmetic number, because the mean of its divisors is an integer number (10105433706).

Almost surely, 2^40421734818 is an apocalyptic number.

40421734818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40421734818 is a wasteful number, since it uses less digits than its factorization.

40421734818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736955808.

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 40421734818 in words is "forty billion, four hundred twenty-one million, seven hundred thirty-four thousand, eight hundred eighteen".