20331727745 has 64 divisors (see below), whose sum is σ = 30321008640. Its totient is φ = 12771744768.

The previous prime is 20331727723. The next prime is 20331727751. The reversal of 20331727745 is 54772713302.

It is not a de Polignac number, because 20331727745 - 2¹² = 20331723649 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3613004 + ... + 3618626.

It is an arithmetic number, because the mean of its divisors is an integer number (473765760).

Almost surely, 2^20331727745 is an apocalyptic number.

It is an amenable number.

20331727745 is a deficient number, since it is larger than the sum of its proper divisors (9989280895).

20331727745 is a wasteful number, since it uses less digits than its factorization.

20331727745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814.

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 20331727745 in words is "twenty billion, three hundred thirty-one million, seven hundred twenty-seven thousand, seven hundred forty-five".