20555442052 has 12 divisors (see below), whose sum is σ = 35974660876. Its totient is φ = 10276967520.

The previous prime is 20555442041. The next prime is 20555442113. The reversal of 20555442052 is 25024455502.

It can be written as a sum of positive squares in 2 ways, for example, as 7251203716 + 13304238336 = 85154^2 + 115344^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20555441999 and 20555442017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124599 + ... + 237982.

Almost surely, 2^20555442052 is an apocalyptic number.

It is an amenable number.

20555442052 is a deficient number, since it is larger than the sum of its proper divisors (15419218824).

20555442052 is a wasteful number, since it uses less digits than its factorization.

20555442052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376758 (or 376756 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 34.

Adding to 20555442052 its reverse (25024455502), we get a palindrome (45579897554).

The spelling of 20555442052 in words is "twenty billion, five hundred fifty-five million, four hundred forty-two thousand, fifty-two".