20554003061 has 4 divisors (see below), whose sum is σ = 21447655392. Its totient is φ = 19660350732.

The previous prime is 20554003049. The next prime is 20554003091. The reversal of 20554003061 is 16030045502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20554003061 - 2³⁴ = 3374133877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20554003061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554003091) by changing a digit.

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, 446826131 + ... + 446826176.

It is an arithmetic number, because the mean of its divisors is an integer number (5361913848).

Almost surely, 2^20554003061 is an apocalyptic number.

It is an amenable number.

20554003061 is a deficient number, since it is larger than the sum of its proper divisors (893652331).

20554003061 is an equidigital number, since it uses as much as digits as its factorization.

20554003061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893652330.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20554003061 its reverse (16030045502), we get a palindrome (36584048563).

The spelling of 20554003061 in words is "twenty billion, five hundred fifty-four million, three thousand, sixty-one".