23223502144520 has 32 divisors (see below), whose sum is σ = 52257653199000. Its totient is φ = 9288552258048.

The previous prime is 23223502144483. The next prime is 23223502144537. The reversal of 23223502144520 is 2544120532232.

It can be written as a sum of positive squares in 4 ways, for example, as 4611232274884 + 18612269869636 = 2147378^2 + 4314194^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26075309 + ... + 26951228.

Almost surely, 2^{23223502144520} is an apocalyptic number.

23223502144520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23223502144520 is an abundant number, since it is smaller than the sum of its proper divisors (29034151054480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23223502144520 is a wasteful number, since it uses less digits than its factorization.

23223502144520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53037497 (or 53037493 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 23223502144520 its reverse (2544120532232), we get a palindrome (25767622676752).

The spelling of 23223502144520 in words is "twenty-three trillion, two hundred twenty-three billion, five hundred two million, one hundred forty-four thousand, five hundred twenty".