40124344409 has 2 divisors, whose sum is σ = 40124344410. Its totient is φ = 40124344408.

The previous prime is 40124344387. The next prime is 40124344453. The reversal of 40124344409 is 90444342104.

40124344409 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., 20636184409 + 19488160000 = 143653^2 + 139600^2 .

It is a cyclic number.

It is not a de Polignac number, because 40124344409 - 2²⁰ = 40123295833 is a prime.

It is not a weakly prime, because it can be changed into another prime (40124344709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20062172204 + 20062172205.

It is an arithmetic number, because the mean of its divisors is an integer number (20062172205).

Almost surely, 2^40124344409 is an apocalyptic number.

It is an amenable number.

40124344409 is a deficient number, since it is larger than the sum of its proper divisors (1).

40124344409 is an equidigital number, since it uses as much as digits as its factorization.

40124344409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 40124344409 in words is "forty billion, one hundred twenty-four million, three hundred forty-four thousand, four hundred nine".