20956594328 has 16 divisors (see below), whose sum is σ = 39735117000. Its totient is φ = 10360563136.

The previous prime is 20956594291. The next prime is 20956594357. The reversal of 20956594328 is 82349565902.

It is a self number, because there is not a number n which added to its sum of digits gives 20956594328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14715998 + ... + 14717421.

Almost surely, 2^20956594328 is an apocalyptic number.

It is an amenable number.

20956594328 is a deficient number, since it is larger than the sum of its proper divisors (18778522672).

20956594328 is a wasteful number, since it uses less digits than its factorization.

20956594328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29433514 (or 29433510 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 20956594328 in words is "twenty billion, nine hundred fifty-six million, five hundred ninety-four thousand, three hundred twenty-eight".