23268146521 has 3 divisors (see below), whose sum is σ = 23268299061. Its totient is φ = 23267993982.

The previous prime is 23268146507. The next prime is 23268146593. The reversal of 23268146521 is 12564186232.

The square root of 23268146521 is 152539.

It is a perfect power (a square), and thus also a powerful number.

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 not a de Polignac number, because 23268146521 - 2⁷ = 23268146393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23268146621) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 76270 + ... + 228808.

It is an arithmetic number, because the mean of its divisors is an integer number (7756099687).

Almost surely, 2^23268146521 is an apocalyptic number.

23268146521 is the 152539-th square number.

23268146521 is the 76270-th centered octagonal number.

It is an amenable number.

23268146521 is a deficient number, since it is larger than the sum of its proper divisors (152540).

23268146521 is an frugal number, since it uses more digits than its factorization.

23268146521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305078 (or 152539 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The spelling of 23268146521 in words is "twenty-three billion, two hundred sixty-eight million, one hundred forty-six thousand, five hundred twenty-one".