23120033551 has 4 divisors (see below), whose sum is σ = 23120351352. Its totient is φ = 23119715752.

The previous prime is 23120033539. The next prime is 23120033591. The reversal of 23120033551 is 15533002132.

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 is a cyclic number.

It is not a de Polignac number, because 23120033551 - 2¹⁷ = 23119902479 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 (23120033501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10236 + ... + 215278.

It is an arithmetic number, because the mean of its divisors is an integer number (5780087838).

Almost surely, 2^23120033551 is an apocalyptic number.

23120033551 is a deficient number, since it is larger than the sum of its proper divisors (317801).

23120033551 is a wasteful number, since it uses less digits than its factorization.

23120033551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317800.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 23120033551 its reverse (15533002132), we get a palindrome (38653035683).

The spelling of 23120033551 in words is "twenty-three billion, one hundred twenty million, thirty-three thousand, five hundred fifty-one".