20418471792 has 160 divisors (see below), whose sum is σ = 62209143360. Its totient is φ = 6390005760.

The previous prime is 20418471767. The next prime is 20418471797. The reversal of 20418471792 is 29717481402.

20418471792 is a `hidden beast` number, since 20 + 418 + 47 + 179 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20418471797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3176742 + ... + 3183162.

It is an arithmetic number, because the mean of its divisors is an integer number (388807146).

Almost surely, 2^20418471792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20418471792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31104571680).

20418471792 is an abundant number, since it is smaller than the sum of its proper divisors (41790671568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20418471792 is a wasteful number, since it uses less digits than its factorization.

20418471792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6888 (or 6876 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 20418471792 in words is "twenty billion, four hundred eighteen million, four hundred seventy-one thousand, seven hundred ninety-two".