40011323533 has 4 divisors (see below), whose sum is σ = 40011785980. Its totient is φ = 40010861088.

The previous prime is 40011323509. The next prime is 40011323543. The reversal of 40011323533 is 33532311004.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6748129609 + 33263193924 = 82147^2 + 182382^2 .

It is a cyclic number.

It is not a de Polignac number, because 40011323533 - 2¹⁷ = 40011192461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40011323498 and 40011323507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40011323543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58368 + ... + 288841.

It is an arithmetic number, because the mean of its divisors is an integer number (10002946495).

Almost surely, 2^40011323533 is an apocalyptic number.

It is an amenable number.

40011323533 is a deficient number, since it is larger than the sum of its proper divisors (462447).

40011323533 is a wasteful number, since it uses less digits than its factorization.

40011323533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462446.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 40011323533 its reverse (33532311004), we get a palindrome (73543634537).

The spelling of 40011323533 in words is "forty billion, eleven million, three hundred twenty-three thousand, five hundred thirty-three".