40618243338 has 16 divisors (see below), whose sum is σ = 81722934720. Its totient is φ = 13458339776.

The previous prime is 40618243319. The next prime is 40618243433. The reversal of 40618243338 is 83334281604.

It is a self number, because there is not a number n which added to its sum of digits gives 40618243338.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20267583 + ... + 20269586.

It is an arithmetic number, because the mean of its divisors is an integer number (5107683420).

Almost surely, 2^40618243338 is an apocalyptic number.

40618243338 is an abundant number, since it is smaller than the sum of its proper divisors (41104691382).

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

40618243338 is a wasteful number, since it uses less digits than its factorization.

40618243338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40537341.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 40618243338 in words is "forty billion, six hundred eighteen million, two hundred forty-three thousand, three hundred thirty-eight".