23423505551 has 8 divisors (see below), whose sum is σ = 23512072608. Its totient is φ = 23334976000.

The previous prime is 23423505527. The next prime is 23423505557. The reversal of 23423505551 is 15550532432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23423505551 - 2²² = 23419311247 is a prime.

It is a super-2 number, since 2×23423505551² (a number of 22 digits) contains 22 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 (23423505557) 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 7 ways as a sum of consecutive naturals, for example, 2198006 + ... + 2208636.

It is an arithmetic number, because the mean of its divisors is an integer number (2939009076).

Almost surely, 2^23423505551 is an apocalyptic number.

23423505551 is a deficient number, since it is larger than the sum of its proper divisors (88567057).

23423505551 is a wasteful number, since it uses less digits than its factorization.

23423505551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18753.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 23423505551 in words is "twenty-three billion, four hundred twenty-three million, five hundred five thousand, five hundred fifty-one".