40640344233 has 8 divisors (see below), whose sum is σ = 54225864000. Its totient is φ = 27074193648.

The previous prime is 40640344219. The next prime is 40640344259. The reversal of 40640344233 is 33244304604.

40640344233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40640344233 - 2¹⁰ = 40640343209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40640344194 and 40640344203.

It is not an unprimeable number, because it can be changed into a prime (40640344273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4837398 + ... + 4845791.

It is an arithmetic number, because the mean of its divisors is an integer number (6778233000).

Almost surely, 2^40640344233 is an apocalyptic number.

It is an amenable number.

40640344233 is a deficient number, since it is larger than the sum of its proper divisors (13585519767).

40640344233 is a wasteful number, since it uses less digits than its factorization.

40640344233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9684591.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 40640344233 its reverse (33244304604), we get a palindrome (73884648837).

The spelling of 40640344233 in words is "forty billion, six hundred forty million, three hundred forty-four thousand, two hundred thirty-three".