20450124133 has 4 divisors (see below), whose sum is σ = 20455698528. Its totient is φ = 20444549740.

The previous prime is 20450124127. The next prime is 20450124161. The reversal of 20450124133 is 33142105402.

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 20450124133 - 2¹³ = 20450115941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20450124098 and 20450124107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450124173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2781691 + ... + 2789032.

It is an arithmetic number, because the mean of its divisors is an integer number (5113924632).

Almost surely, 2^20450124133 is an apocalyptic number.

It is an amenable number.

20450124133 is a deficient number, since it is larger than the sum of its proper divisors (5574395).

20450124133 is an equidigital number, since it uses as much as digits as its factorization.

20450124133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574394.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20450124133 its reverse (33142105402), we get a palindrome (53592229535).

The spelling of 20450124133 in words is "twenty billion, four hundred fifty million, one hundred twenty-four thousand, one hundred thirty-three".