40109505826 has 24 divisors (see below), whose sum is σ = 66909065364. Its totient is φ = 18011747520.

The previous prime is 40109505773. The next prime is 40109505829. The reversal of 40109505826 is 62850590104.

It can be written as a sum of positive squares in 6 ways, for example, as 7030990201 + 33078515625 = 83851^2 + 181875^2 .

It is not an unprimeable number, because it can be changed into a prime (40109505829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1591105 + ... + 1616116.

Almost surely, 2^40109505826 is an apocalyptic number.

40109505826 is a deficient number, since it is larger than the sum of its proper divisors (26799559538).

40109505826 is a wasteful number, since it uses less digits than its factorization.

40109505826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207286 (or 3207273 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 40109505826 in words is "forty billion, one hundred nine million, five hundred five thousand, eight hundred twenty-six".