40872642593 has 4 divisors (see below), whose sum is σ = 40936407108. Its totient is φ = 40808878080.

The previous prime is 40872642583. The next prime is 40872642653. The reversal of 40872642593 is 39524627804.

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 34957033024 + 5915609569 = 186968^2 + 76913^2 .

It is a cyclic number.

It is not a de Polignac number, because 40872642593 - 2¹⁴ = 40872626209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40872642533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31881296 + ... + 31882577.

It is an arithmetic number, because the mean of its divisors is an integer number (10234101777).

Almost surely, 2^40872642593 is an apocalyptic number.

It is an amenable number.

40872642593 is a deficient number, since it is larger than the sum of its proper divisors (63764515).

40872642593 is an equidigital number, since it uses as much as digits as its factorization.

40872642593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63764514.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 40872642593 in words is "forty billion, eight hundred seventy-two million, six hundred forty-two thousand, five hundred ninety-three".