20551010044 has 24 divisors (see below), whose sum is σ = 36685929728. Its totient is φ = 10070533440.

The previous prime is 20551010041. The next prime is 20551010059. The reversal of 20551010044 is 44001015502.

It is a junction number, because it is equal to n+sod(n) for n = 20551009997 and 20551010024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551010041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84444 + ... + 219619.

Almost surely, 2^20551010044 is an apocalyptic number.

It is an amenable number.

20551010044 is a deficient number, since it is larger than the sum of its proper divisors (16134919684).

20551010044 is a wasteful number, since it uses less digits than its factorization.

20551010044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304405 (or 304403 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 20551010044 its reverse (44001015502), we get a palindrome (64552025546).

The spelling of 20551010044 in words is "twenty billion, five hundred fifty-one million, ten thousand, forty-four".