40802840905 has 4 divisors (see below), whose sum is σ = 48963409092. Its totient is φ = 32642272720.

The previous prime is 40802840899. The next prime is 40802840909. The reversal of 40802840905 is 50904820804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12547584256 + 28255256649 = 112016^2 + 168093^2 .

It is not a de Polignac number, because 40802840905 - 2¹⁷ = 40802709833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40802840909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4080284086 + ... + 4080284095.

It is an arithmetic number, because the mean of its divisors is an integer number (12240852273).

Almost surely, 2^40802840905 is an apocalyptic number.

It is an amenable number.

40802840905 is a deficient number, since it is larger than the sum of its proper divisors (8160568187).

40802840905 is an equidigital number, since it uses as much as digits as its factorization.

40802840905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8160568186.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 40802840905 in words is "forty billion, eight hundred two million, eight hundred forty thousand, nine hundred five".