20529810944 has 40 divisors (see below), whose sum is σ = 41402995128. Its totient is φ = 10168944640.

The previous prime is 20529810943. The next prime is 20529810953. The reversal of 20529810944 is 44901892502.

It is a super-2 number, since 2×20529810944² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20529810895 and 20529810904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20529810943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132587 + ... + 242154.

Almost surely, 2^20529810944 is an apocalyptic number.

It is an amenable number.

20529810944 is an abundant number, since it is smaller than the sum of its proper divisors (20873184184).

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

20529810944 is an equidigital number, since it uses as much as digits as its factorization.

20529810944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374866 (or 374850 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 20529810944 in words is "twenty billion, five hundred twenty-nine million, eight hundred ten thousand, nine hundred forty-four".