20490130533 has 8 divisors (see below), whose sum is σ = 27323137408. Its totient is φ = 13658605344.

The previous prime is 20490130511. The next prime is 20490130547. The reversal of 20490130533 is 33503109402.

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

It is not a de Polignac number, because 20490130533 - 2⁵ = 20490130501 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 20490130533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20490130933) 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, 337741 + ... + 393762.

It is an arithmetic number, because the mean of its divisors is an integer number (3415392176).

Almost surely, 2^20490130533 is an apocalyptic number.

It is an amenable number.

20490130533 is a deficient number, since it is larger than the sum of its proper divisors (6833006875).

20490130533 is an equidigital number, since it uses as much as digits as its factorization.

20490130533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740843.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 20490130533 its reverse (33503109402), we get a palindrome (53993239935).

The spelling of 20490130533 in words is "twenty billion, four hundred ninety million, one hundred thirty thousand, five hundred thirty-three".