20652665772 has 48 divisors (see below), whose sum is σ = 49572845280. Its totient is φ = 6687217152.

The previous prime is 20652665753. The next prime is 20652665777. The reversal of 20652665772 is 27756625602.

It is not an unprimeable number, because it can be changed into a prime (20652665777) 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, 236254 + ... + 311642.

It is an arithmetic number, because the mean of its divisors is an integer number (1032767610).

Almost surely, 2^20652665772 is an apocalyptic number.

It is an amenable number.

20652665772 is an abundant number, since it is smaller than the sum of its proper divisors (28920179508).

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

20652665772 is a wasteful number, since it uses less digits than its factorization.

20652665772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76050 (or 76048 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 20652665772 in words is "twenty billion, six hundred fifty-two million, six hundred sixty-five thousand, seven hundred seventy-two".