20858850768 has 200 divisors, whose sum is σ = 63207410816. Its totient is φ = 5927040000.

The previous prime is 20858850679. The next prime is 20858850787. The reversal of 20858850768 is 86705885802.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 27774393 + ... + 27775143.

Almost surely, 2^20858850768 is an apocalyptic number.

20858850768 is a gapful number since it is divisible by the number (28) 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 20858850768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31603705408).

20858850768 is an abundant number, since it is smaller than the sum of its proper divisors (42348560048).

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

20858850768 is an equidigital number, since it uses as much as digits as its factorization.

20858850768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 57.

The spelling of 20858850768 in words is "twenty billion, eight hundred fifty-eight million, eight hundred fifty thousand, seven hundred sixty-eight".