20551576052 has 12 divisors (see below), whose sum is σ = 41103152160. Its totient is φ = 8807818296.

The previous prime is 20551576033. The next prime is 20551576069. The reversal of 20551576052 is 25067515502.

20551576052 is an admirable number.

It is a super-2 number, since 2×20551576052² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20551575997 and 20551576015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366992402 + ... + 366992457.

It is an arithmetic number, because the mean of its divisors is an integer number (3425262680).

Almost surely, 2^20551576052 is an apocalyptic number.

It is an amenable number.

20551576052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20551576052 is a wasteful number, since it uses less digits than its factorization.

20551576052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733984870 (or 733984868 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 38.

The spelling of 20551576052 in words is "twenty billion, five hundred fifty-one million, five hundred seventy-six thousand, fifty-two".