20746788895 has 20 divisors (see below), whose sum is σ = 29043793080. Its totient is φ = 14226361296.

The previous prime is 20746788893. The next prime is 20746788943. The reversal of 20746788895 is 59888764702.

It is not a de Polignac number, because 20746788895 - 2¹ = 20746788893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20746788893) 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 19 ways as a sum of consecutive naturals, for example, 852085 + ... + 876094.

It is an arithmetic number, because the mean of its divisors is an integer number (1452189654).

Almost surely, 2^20746788895 is an apocalyptic number.

20746788895 is a deficient number, since it is larger than the sum of its proper divisors (8297004185).

20746788895 is an frugal number, since it uses more digits than its factorization.

20746788895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728212 (or 1728191 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 20746788895 in words is "twenty billion, seven hundred forty-six million, seven hundred eighty-eight thousand, eight hundred ninety-five".