20665524324 has 24 divisors (see below), whose sum is σ = 48228747840. Its totient is φ = 6887195104.

The previous prime is 20665524301. The next prime is 20665524349. The reversal of 20665524324 is 42342556602.

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, 97464 + ... + 225455.

It is an arithmetic number, because the mean of its divisors is an integer number (2009531160).

Almost surely, 2^20665524324 is an apocalyptic number.

It is an amenable number.

20665524324 is an abundant number, since it is smaller than the sum of its proper divisors (27563223516).

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

20665524324 is a wasteful number, since it uses less digits than its factorization.

20665524324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328259 (or 328257 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 20665524324 in words is "twenty billion, six hundred sixty-five million, five hundred twenty-four thousand, three hundred twenty-four".