233421044551 has 4 divisors (see below), whose sum is σ = 235732144104. Its totient is φ = 231109945000.

The previous prime is 233421044531. The next prime is 233421044617. The reversal of 233421044551 is 155440124332.

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

It is a cyclic number.

It is not a de Polignac number, because 233421044551 - 2¹⁵ = 233421011783 is a prime.

It is a super-3 number, since 3×233421044551³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233421044531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155549625 + ... + 1155549826.

It is an arithmetic number, because the mean of its divisors is an integer number (58933036026).

Almost surely, 2^233421044551 is an apocalyptic number.

233421044551 is a deficient number, since it is larger than the sum of its proper divisors (2311099553).

233421044551 is a wasteful number, since it uses less digits than its factorization.

233421044551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311099552.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 233421044551 its reverse (155440124332), we get a palindrome (388861168883).

The spelling of 233421044551 in words is "two hundred thirty-three billion, four hundred twenty-one million, forty-four thousand, five hundred fifty-one".