20530550123 has 8 divisors (see below), whose sum is σ = 21884126400. Its totient is φ = 19193184640.

The previous prime is 20530550119. The next prime is 20530550129. The reversal of 20530550123 is 32105503502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20530550123 - 2² = 20530550119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20530550092 and 20530550101.

It is not an unprimeable number, because it can be changed into a prime (20530550129) 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, 4050083 + ... + 4055148.

It is an arithmetic number, because the mean of its divisors is an integer number (2735515800).

Almost surely, 2^20530550123 is an apocalyptic number.

20530550123 is a deficient number, since it is larger than the sum of its proper divisors (1353576277).

20530550123 is a wasteful number, since it uses less digits than its factorization.

20530550123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8105397.

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 20530550123 in words is "twenty billion, five hundred thirty million, five hundred fifty thousand, one hundred twenty-three".