20812541760 has 504 divisors, whose sum is σ = 77747993856. Its totient is φ = 5296389120.

The previous prime is 20812541753. The next prime is 20812541807. The reversal of 20812541760 is 6714521802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48288745 + ... + 48289175.

Almost surely, 2^20812541760 is an apocalyptic number.

20812541760 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 20812541760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38873996928).

20812541760 is an abundant number, since it is smaller than the sum of its proper divisors (56935452096).

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

20812541760 is an frugal number, since it uses more digits than its factorization.

20812541760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 20812541760 in words is "twenty billion, eight hundred twelve million, five hundred forty-one thousand, seven hundred sixty".