20565651150 has 72 divisors (see below), whose sum is σ = 60276068424. Its totient is φ = 4985611200.

The previous prime is 20565651137. The next prime is 20565651187. The reversal of 20565651150 is 5115656502.

20565651150 is a `hidden beast` number, since 20 + 565 + 65 + 1 + 15 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2072389 + ... + 2082288.

It is an arithmetic number, because the mean of its divisors is an integer number (837167617).

Almost surely, 2^20565651150 is an apocalyptic number.

20565651150 is an abundant number, since it is smaller than the sum of its proper divisors (39710417274).

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

20565651150 is a wasteful number, since it uses less digits than its factorization.

20565651150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154706 (or 4154698 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 20565651150 in words is "twenty billion, five hundred sixty-five million, six hundred fifty-one thousand, one hundred fifty".