20643260058 has 48 divisors (see below), whose sum is σ = 47152961856. Its totient is φ = 6514041600.

The previous prime is 20643260051. The next prime is 20643260083. The reversal of 20643260058 is 85006234602.

20643260058 is a `hidden beast` number, since 2 + 0 + 6 + 43 + 2 + 600 + 5 + 8 = 666.

It is a super-2 number, since 2×20643260058² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20643260051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216868 + ... + 297183.

It is an arithmetic number, because the mean of its divisors is an integer number (982353372).

Almost surely, 2^20643260058 is an apocalyptic number.

20643260058 is an abundant number, since it is smaller than the sum of its proper divisors (26509701798).

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

20643260058 is a wasteful number, since it uses less digits than its factorization.

20643260058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514179 (or 514176 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 20643260058 in words is "twenty billion, six hundred forty-three million, two hundred sixty thousand, fifty-eight".