20658529008 has 200 divisors, whose sum is σ = 64507777488. Its totient is φ = 6344967168.

The previous prime is 20658528983. The next prime is 20658529027. The reversal of 20658529008 is 80092585602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17403391 + ... + 17404577.

Almost surely, 2^20658529008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20658529008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32253888744).

20658529008 is an abundant number, since it is smaller than the sum of its proper divisors (43849248480).

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

20658529008 is a wasteful number, since it uses less digits than its factorization.

20658529008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 20658529008 in words is "twenty billion, six hundred fifty-eight million, five hundred twenty-nine thousand, eight".