23040450551 has 4 divisors (see below), whose sum is σ = 23044553712. Its totient is φ = 23036347392.

The previous prime is 23040450547. The next prime is 23040450553. The reversal of 23040450551 is 15505404032.

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 23040450551 - 2² = 23040450547 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 (23040450553) 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, 2043146 + ... + 2054391.

It is an arithmetic number, because the mean of its divisors is an integer number (5761138428).

Almost surely, 2^23040450551 is an apocalyptic number.

23040450551 is a deficient number, since it is larger than the sum of its proper divisors (4103161).

23040450551 is an equidigital number, since it uses as much as digits as its factorization.

23040450551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103160.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 23040450551 its reverse (15505404032), we get a palindrome (38545854583).

The spelling of 23040450551 in words is "twenty-three billion, forty million, four hundred fifty thousand, five hundred fifty-one".