20771050824 has 96 divisors (see below), whose sum is σ = 57990541440. Its totient is φ = 6711465600.

The previous prime is 20771050813. The next prime is 20771050829. The reversal of 20771050824 is 42805017702.

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

It is not an unprimeable number, because it can be changed into a prime (20771050829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 707559 + ... + 736329.

It is an arithmetic number, because the mean of its divisors is an integer number (604068140).

Almost surely, 2^20771050824 is an apocalyptic number.

20771050824 is a gapful number since it is divisible by the number (24) 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 20771050824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28995270720).

20771050824 is an abundant number, since it is smaller than the sum of its proper divisors (37219490616).

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

20771050824 is a wasteful number, since it uses less digits than its factorization.

20771050824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29091 (or 29084 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The spelling of 20771050824 in words is "twenty billion, seven hundred seventy-one million, fifty thousand, eight hundred twenty-four".