40012423433 has 2 divisors, whose sum is σ = 40012423434. Its totient is φ = 40012423432.

The previous prime is 40012423427. The next prime is 40012423441. The reversal of 40012423433 is 33432421004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40003200064 + 9223369 = 200008^2 + 3037^2 .

It is a cyclic number.

It is not a de Polignac number, because 40012423433 - 2⁸ = 40012423177 is a prime.

It is not a weakly prime, because it can be changed into another prime (40012423403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20006211716 + 20006211717.

It is an arithmetic number, because the mean of its divisors is an integer number (20006211717).

Almost surely, 2^40012423433 is an apocalyptic number.

It is an amenable number.

40012423433 is a deficient number, since it is larger than the sum of its proper divisors (1).

40012423433 is an equidigital number, since it uses as much as digits as its factorization.

40012423433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 40012423433 its reverse (33432421004), we get a palindrome (73444844437).

The spelling of 40012423433 in words is "forty billion, twelve million, four hundred twenty-three thousand, four hundred thirty-three".