40023311633 has 8 divisors (see below), whose sum is σ = 42389153352. Its totient is φ = 37658750976.

The previous prime is 40023311611. The next prime is 40023311663. The reversal of 40023311633 is 33611332004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 822083584 + 39201228049 = 28672^2 + 197993^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40023311633 - 2¹⁰ = 40023310609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40023311663) 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, 255560 + ... + 381257.

It is an arithmetic number, because the mean of its divisors is an integer number (5298644169).

Almost surely, 2^40023311633 is an apocalyptic number.

It is an amenable number.

40023311633 is a deficient number, since it is larger than the sum of its proper divisors (2365841719).

40023311633 is a wasteful number, since it uses less digits than its factorization.

40023311633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640531.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 40023311633 its reverse (33611332004), we get a palindrome (73634643637).

The spelling of 40023311633 in words is "forty billion, twenty-three million, three hundred eleven thousand, six hundred thirty-three".