40804435987226 has 4 divisors (see below), whose sum is σ = 61206653980842. Its totient is φ = 20402217993612.

The previous prime is 40804435987129. The next prime is 40804435987253. The reversal of 40804435987226 is 62278953440804.

It is a Cunningham number, because it is equal to 6387835²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40804435987225 + 1 = 6387835^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201108996805 + ... + 10201108996808.

Almost surely, 2^{40804435987226} is an apocalyptic number.

40804435987226 is a deficient number, since it is larger than the sum of its proper divisors (20402217993616).

40804435987226 is a wasteful number, since it uses less digits than its factorization.

40804435987226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20402217993615.

The product of its (nonzero) digits is 92897280, while the sum is 62.

The spelling of 40804435987226 in words is "forty trillion, eight hundred four billion, four hundred thirty-five million, nine hundred eighty-seven thousand, two hundred twenty-six".