20327573573 has 4 divisors (see below), whose sum is σ = 20355535200. Its totient is φ = 20299611948.

The previous prime is 20327573543. The next prime is 20327573593. The reversal of 20327573573 is 37537572302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37537572302 = 2 ⋅18768786151.

It is a cyclic number.

It is not a de Polignac number, because 20327573573 - 2¹⁰ = 20327572549 is a prime.

It is a super-3 number, since 3×20327573573³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20327573533) 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, 13979723 + ... + 13981176.

It is an arithmetic number, because the mean of its divisors is an integer number (5088883800).

Almost surely, 2^20327573573 is an apocalyptic number.

It is an amenable number.

20327573573 is a deficient number, since it is larger than the sum of its proper divisors (27961627).

20327573573 is an equidigital number, since it uses as much as digits as its factorization.

20327573573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27961626.

The product of its (nonzero) digits is 926100, while the sum is 44.

The spelling of 20327573573 in words is "twenty billion, three hundred twenty-seven million, five hundred seventy-three thousand, five hundred seventy-three".