20752816893 has 8 divisors (see below), whose sum is σ = 28124036256. Its totient is φ = 13608404400.

The previous prime is 20752816873. The next prime is 20752816897. The reversal of 20752816893 is 39861825702.

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

It is not a de Polignac number, because 20752816893 - 2²⁴ = 20736039677 is a prime.

It is a super-3 number, since 3×20752816893³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20752816897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56701503 + ... + 56701868.

It is an arithmetic number, because the mean of its divisors is an integer number (3515504532).

Almost surely, 2^20752816893 is an apocalyptic number.

It is an amenable number.

20752816893 is a deficient number, since it is larger than the sum of its proper divisors (7371219363).

20752816893 is a wasteful number, since it uses less digits than its factorization.

20752816893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113403435.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 20752816893 in words is "twenty billion, seven hundred fifty-two million, eight hundred sixteen thousand, eight hundred ninety-three".