20656775352 has 64 divisors (see below), whose sum is σ = 53338383360. Its totient is φ = 6659654400.

The previous prime is 20656775333. The next prime is 20656775369. The reversal of 20656775352 is 25357765602.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475827 + ... + 1489757.

It is an arithmetic number, because the mean of its divisors is an integer number (833412240).

Almost surely, 2^20656775352 is an apocalyptic number.

It is an amenable number.

20656775352 is an abundant number, since it is smaller than the sum of its proper divisors (32681608008).

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

20656775352 is a wasteful number, since it uses less digits than its factorization.

20656775352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15964 (or 15960 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 48.

The spelling of 20656775352 in words is "twenty billion, six hundred fifty-six million, seven hundred seventy-five thousand, three hundred fifty-two".