33440402123 has 4 divisors (see below), whose sum is σ = 33442837920. Its totient is φ = 33437966328.

The previous prime is 33440402117. The next prime is 33440402159. The reversal of 33440402123 is 32120404433.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33440402123 is a prime.

It is a super-2 number, since 2×33440402123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33440402092 and 33440402101.

It is not an unprimeable number, because it can be changed into a prime (33440402423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197188 + ... + 1224801.

It is an arithmetic number, because the mean of its divisors is an integer number (8360709480).

Almost surely, 2^33440402123 is an apocalyptic number.

33440402123 is a deficient number, since it is larger than the sum of its proper divisors (2435797).

33440402123 is a wasteful number, since it uses less digits than its factorization.

33440402123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435796.

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

Adding to 33440402123 its reverse (32120404433), we get a palindrome (65560806556).

The spelling of 33440402123 in words is "thirty-three billion, four hundred forty million, four hundred two thousand, one hundred twenty-three".