23520136432 has 40 divisors (see below), whose sum is σ = 49085823584. Its totient is φ = 10853201664.

The previous prime is 23520136399. The next prime is 23520136439. The reversal of 23520136432 is 23463102532.

It is a junction number, because it is equal to n+sod(n) for n = 23520136394 and 23520136403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23520136439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410898 + ... + 1427470.

Almost surely, 2^23520136432 is an apocalyptic number.

It is an amenable number.

23520136432 is an abundant number, since it is smaller than the sum of its proper divisors (25565687152).

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

23520136432 is a wasteful number, since it uses less digits than its factorization.

23520136432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23417 (or 23411 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 23520136432 its reverse (23463102532), we get a palindrome (46983238964).

The spelling of 23520136432 in words is "twenty-three billion, five hundred twenty million, one hundred thirty-six thousand, four hundred thirty-two".