20485017000 has 768 divisors, whose sum is σ = 86628372480. Its totient is φ = 4257792000.

The previous prime is 20485016989. The next prime is 20485017037. The reversal of 20485017000 is 71058402.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 33200692 + ... + 33201308.

It is an arithmetic number, because the mean of its divisors is an integer number (112797360).

Almost surely, 2^20485017000 is an apocalyptic number.

20485017000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20485017000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43314186240).

20485017000 is an abundant number, since it is smaller than the sum of its proper divisors (66143355480).

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

20485017000 is a wasteful number, since it uses less digits than its factorization.

20485017000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The spelling of 20485017000 in words is "twenty billion, four hundred eighty-five million, seventeen thousand".