20318925168 has 240 divisors, whose sum is σ = 61307326080. Its totient is φ = 6507019008.

The previous prime is 20318925163. The next prime is 20318925173. The reversal of 20318925168 is 86152981302.

20318925168 is a `hidden beast` number, since 20 + 31 + 89 + 2 + 516 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20318925163) and next prime (20318925173).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20318925163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34614571 + ... + 34615157.

It is an arithmetic number, because the mean of its divisors is an integer number (255447192).

Almost surely, 2^20318925168 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 20318925168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30653663040).

20318925168 is an abundant number, since it is smaller than the sum of its proper divisors (40988400912).

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

20318925168 is a wasteful number, since it uses less digits than its factorization.

20318925168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 20318925168 in words is "twenty billion, three hundred eighteen million, nine hundred twenty-five thousand, one hundred sixty-eight".