40211320243 has 16 divisors (see below), whose sum is σ = 44218794240. Its totient is φ = 36409291776.

The previous prime is 40211320241. The next prime is 40211320273. The reversal of 40211320243 is 34202311204.

It is a cyclic number.

It is not a de Polignac number, because 40211320243 - 2¹ = 40211320241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40211320241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303171 + ... + 415132.

It is an arithmetic number, because the mean of its divisors is an integer number (2763674640).

Almost surely, 2^40211320243 is an apocalyptic number.

40211320243 is a deficient number, since it is larger than the sum of its proper divisors (4007473997).

40211320243 is a wasteful number, since it uses less digits than its factorization.

40211320243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718446.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40211320243 its reverse (34202311204), we get a palindrome (74413631447).

The spelling of 40211320243 in words is "forty billion, two hundred eleven million, three hundred twenty thousand, two hundred forty-three".