43404034523 has 2 divisors, whose sum is σ = 43404034524. Its totient is φ = 43404034522.

The previous prime is 43404034507. The next prime is 43404034567. The reversal of 43404034523 is 32543040434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43404034523 - 2⁴ = 43404034507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43404034523.

It is not a weakly prime, because it can be changed into another prime (43404094523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21702017261 + 21702017262.

It is an arithmetic number, because the mean of its divisors is an integer number (21702017262).

Almost surely, 2^43404034523 is an apocalyptic number.

43404034523 is a deficient number, since it is larger than the sum of its proper divisors (1).

43404034523 is an equidigital number, since it uses as much as digits as its factorization.

43404034523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 43404034523 its reverse (32543040434), we get a palindrome (75947074957).

The spelling of 43404034523 in words is "forty-three billion, four hundred four million, thirty-four thousand, five hundred twenty-three".