40238400218 has 12 divisors (see below), whose sum is σ = 62510668350. Its totient is φ = 19425433776.

The previous prime is 40238400217. The next prime is 40238400229. The reversal of 40238400218 is 81200483204.

40238400218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 35763726769 + 4474673449 = 189113^2 + 66893^2 .

It is not an unprimeable number, because it can be changed into a prime (40238400211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11959793 + ... + 11963156.

Almost surely, 2^40238400218 is an apocalyptic number.

40238400218 is a deficient number, since it is larger than the sum of its proper divisors (22272268132).

40238400218 is a wasteful number, since it uses less digits than its factorization.

40238400218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23923009 (or 23922980 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 40238400218 in words is "forty billion, two hundred thirty-eight million, four hundred thousand, two hundred eighteen".