20328650586 has 24 divisors (see below), whose sum is σ = 45119689524. Its totient is φ = 6610943040.

The previous prime is 20328650581. The next prime is 20328650599. The reversal of 20328650586 is 68505682302.

20328650586 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 8 + 65 + 0 + 586 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14561007561 + 5767643025 = 120669^2 + 75945^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20328650581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13772061 + ... + 13773536.

Almost surely, 2^20328650586 is an apocalyptic number.

20328650586 is an abundant number, since it is smaller than the sum of its proper divisors (24791038938).

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

20328650586 is a wasteful number, since it uses less digits than its factorization.

20328650586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27545646 (or 27545643 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 20328650586 in words is "twenty billion, three hundred twenty-eight million, six hundred fifty thousand, five hundred eighty-six".