40023433454 has 4 divisors (see below), whose sum is σ = 60035150184. Its totient is φ = 20011716726.

The previous prime is 40023433451. The next prime is 40023433477. The reversal of 40023433454 is 45433432004.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40023433454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40023433451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005858362 + ... + 10005858365.

It is an arithmetic number, because the mean of its divisors is an integer number (15008787546).

Almost surely, 2^40023433454 is an apocalyptic number.

40023433454 is a deficient number, since it is larger than the sum of its proper divisors (20011716730).

40023433454 is a wasteful number, since it uses less digits than its factorization.

40023433454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011716729.

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

Adding to 40023433454 its reverse (45433432004), we get a palindrome (85456865458).

The spelling of 40023433454 in words is "forty billion, twenty-three million, four hundred thirty-three thousand, four hundred fifty-four".