40105880818 has 8 divisors (see below), whose sum is σ = 60274290780. Its totient is φ = 20014450560.

The previous prime is 40105880813. The next prime is 40105880839. The reversal of 40105880818 is 81808850104.

It can be written as a sum of positive squares in 2 ways, for example, as 37541775049 + 2564105769 = 193757^2 + 50637^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40105880813) 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, 19243623 + ... + 19245706.

Almost surely, 2^40105880818 is an apocalyptic number.

40105880818 is a deficient number, since it is larger than the sum of its proper divisors (20168409962).

40105880818 is a wasteful number, since it uses less digits than its factorization.

40105880818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38489852.

The product of its (nonzero) digits is 81920, while the sum is 43.

The spelling of 40105880818 in words is "forty billion, one hundred five million, eight hundred eighty thousand, eight hundred eighteen".