40211043209 has 2 divisors, whose sum is σ = 40211043210. Its totient is φ = 40211043208.

The previous prime is 40211043203. The next prime is 40211043251. The reversal of 40211043209 is 90234011204.

40211043209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20205769609 + 20005273600 = 142147^2 + 141440^2 .

It is a cyclic number.

It is not a de Polignac number, because 40211043209 - 2³² = 35916075913 is a prime.

It is not a weakly prime, because it can be changed into another prime (40211043203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20105521604 + 20105521605.

It is an arithmetic number, because the mean of its divisors is an integer number (20105521605).

Almost surely, 2^40211043209 is an apocalyptic number.

It is an amenable number.

40211043209 is a deficient number, since it is larger than the sum of its proper divisors (1).

40211043209 is an equidigital number, since it uses as much as digits as its factorization.

40211043209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 40211043209 in words is "forty billion, two hundred eleven million, forty-three thousand, two hundred nine".