40404323233 has 2 divisors, whose sum is σ = 40404323234. Its totient is φ = 40404323232.

The previous prime is 40404323231. The next prime is 40404323237. The reversal of 40404323233 is 33232340404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37973537424 + 2430785809 = 194868^2 + 49303^2 .

It is a cyclic number.

It is not a de Polignac number, because 40404323233 - 2¹ = 40404323231 is a prime.

Together with 40404323231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40404323231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202161616 + 20202161617.

It is an arithmetic number, because the mean of its divisors is an integer number (20202161617).

Almost surely, 2^40404323233 is an apocalyptic number.

It is an amenable number.

40404323233 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404323233 is an equidigital number, since it uses as much as digits as its factorization.

40404323233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 40404323233 its reverse (33232340404), we get a palindrome (73636663637).

The spelling of 40404323233 in words is "forty billion, four hundred four million, three hundred twenty-three thousand, two hundred thirty-three".