23144501521 has 8 divisors (see below), whose sum is σ = 24488868320. Its totient is φ = 21812758272.

The previous prime is 23144501459. The next prime is 23144501543. The reversal of 23144501521 is 12510544132.

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 23144501521 - 2²⁵ = 23110947089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23144501521.

It is not an unprimeable number, because it can be changed into a prime (23144501551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3152115 + ... + 3159448.

It is an arithmetic number, because the mean of its divisors is an integer number (3061108540).

Almost surely, 2^23144501521 is an apocalyptic number.

It is an amenable number.

23144501521 is a deficient number, since it is larger than the sum of its proper divisors (1344366799).

23144501521 is a wasteful number, since it uses less digits than its factorization.

23144501521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311775.

The product of its (nonzero) digits is 4800, while the sum is 28.

It can be divided in two parts, 23144501 and 521, that multiplied together give a palindrome (12058285021).

The spelling of 23144501521 in words is "twenty-three billion, one hundred forty-four million, five hundred one thousand, five hundred twenty-one".