20751776000 has 144 divisors (see below), whose sum is σ = 52472259840. Its totient is φ = 8175974400.

The previous prime is 20751775991. The next prime is 20751776027. The reversal of 20751776000 is 67715702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2139161 + ... + 2148839.

Almost surely, 2^20751776000 is an apocalyptic number.

20751776000 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 20751776000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26236129920).

20751776000 is an abundant number, since it is smaller than the sum of its proper divisors (31720483840).

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

20751776000 is an frugal number, since it uses more digits than its factorization.

20751776000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9777 (or 9753 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 35.

The spelling of 20751776000 in words is "twenty billion, seven hundred fifty-one million, seven hundred seventy-six thousand".