23005543551 has 8 divisors (see below), whose sum is σ = 30675120000. Its totient is φ = 15336498072.

The previous prime is 23005543549. The next prime is 23005543571. The reversal of 23005543551 is 15534550032.

It is a happy number.

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

It is not a de Polignac number, because 23005543551 - 2¹ = 23005543549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23005543541) 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 7 ways as a sum of consecutive naturals, for example, 17301 + ... + 215198.

It is an arithmetic number, because the mean of its divisors is an integer number (3834390000).

Almost surely, 2^23005543551 is an apocalyptic number.

23005543551 is a deficient number, since it is larger than the sum of its proper divisors (7669576449).

23005543551 is a wasteful number, since it uses less digits than its factorization.

23005543551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265485.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 23005543551 in words is "twenty-three billion, five million, five hundred forty-three thousand, five hundred fifty-one".