33155233253 has 4 divisors (see below), whose sum is σ = 33185457900. Its totient is φ = 33125008608.

The previous prime is 33155233219. The next prime is 33155233271. The reversal of 33155233253 is 35233255133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35233255133 = 1033 ⋅34107701.

It can be written as a sum of positive squares in 2 ways, for example, as 13127888929 + 20027344324 = 114577^2 + 141518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33155233253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33155233213) 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, 15110678 + ... + 15112871.

It is an arithmetic number, because the mean of its divisors is an integer number (8296364475).

Almost surely, 2^33155233253 is an apocalyptic number.

It is an amenable number.

33155233253 is a deficient number, since it is larger than the sum of its proper divisors (30224647).

33155233253 is a wasteful number, since it uses less digits than its factorization.

33155233253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30224646.

The product of its digits is 121500, while the sum is 35.

Adding to 33155233253 its reverse (35233255133), we get a palindrome (68388488386).

The spelling of 33155233253 in words is "thirty-three billion, one hundred fifty-five million, two hundred thirty-three thousand, two hundred fifty-three".