40044500213 has 4 divisors (see below), whose sum is σ = 40047105708. Its totient is φ = 40041894720.

The previous prime is 40044500183. The next prime is 40044500299. The reversal of 40044500213 is 31200544004.

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 7493845489 + 32550654724 = 86567^2 + 180418^2 .

It is a cyclic number.

It is not a de Polignac number, because 40044500213 - 2³⁰ = 38970758389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044500813) 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 3 ways as a sum of consecutive naturals, for example, 1279556 + ... + 1310477.

It is an arithmetic number, because the mean of its divisors is an integer number (10011776427).

Almost surely, 2^40044500213 is an apocalyptic number.

It is an amenable number.

40044500213 is a deficient number, since it is larger than the sum of its proper divisors (2605495).

40044500213 is a wasteful number, since it uses less digits than its factorization.

40044500213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605494.

The product of its (nonzero) digits is 1920, while the sum is 23.

The spelling of 40044500213 in words is "forty billion, forty-four million, five hundred thousand, two hundred thirteen".