20393959608 has 192 divisors, whose sum is σ = 62993998080. Its totient is φ = 5900083200.

The previous prime is 20393959561. The next prime is 20393959613. The reversal of 20393959608 is 80695939302.

20393959608 is a `hidden beast` number, since 20 + 3 + 9 + 3 + 9 + 5 + 9 + 608 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 17687160 + ... + 17688312.

It is an arithmetic number, because the mean of its divisors is an integer number (328093740).

Almost surely, 2^20393959608 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 20393959608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31496999040).

20393959608 is an abundant number, since it is smaller than the sum of its proper divisors (42600038472).

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

20393959608 is a wasteful number, since it uses less digits than its factorization.

20393959608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 20393959608 in words is "twenty billion, three hundred ninety-three million, nine hundred fifty-nine thousand, six hundred eight".