20658527628 has 24 divisors (see below), whose sum is σ = 48207224688. Its totient is φ = 6885605376.

The previous prime is 20658527623. The next prime is 20658527671. The reversal of 20658527628 is 82672585602.

It is not an unprimeable number, because it can be changed into a prime (20658527621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95100 + ... + 224412.

It is an arithmetic number, because the mean of its divisors is an integer number (2008634362).

Almost surely, 2^20658527628 is an apocalyptic number.

It is an amenable number.

20658527628 is an abundant number, since it is smaller than the sum of its proper divisors (27548697060).

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

20658527628 is a wasteful number, since it uses less digits than its factorization.

20658527628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142633 (or 142631 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 20658527628 in words is "twenty billion, six hundred fifty-eight million, five hundred twenty-seven thousand, six hundred twenty-eight".