21600523748 has 48 divisors (see below), whose sum is σ = 40773922560. Its totient is φ = 9975227904.

The previous prime is 21600523741. The next prime is 21600523751. The reversal of 21600523748 is 84732500612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21600523741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2454965 + ... + 2463747.

It is an arithmetic number, because the mean of its divisors is an integer number (849456720).

Almost surely, 2^21600523748 is an apocalyptic number.

It is an amenable number.

21600523748 is a deficient number, since it is larger than the sum of its proper divisors (19173398812).

21600523748 is a wasteful number, since it uses less digits than its factorization.

21600523748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476 (or 9474 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 21600523748 in words is "twenty-one billion, six hundred million, five hundred twenty-three thousand, seven hundred forty-eight".