20168931300 has 288 divisors, whose sum is σ = 70412160000. Its totient is φ = 4354352640.

The previous prime is 20168931241. The next prime is 20168931317. The reversal of 20168931300 is 313986102.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19909594 + ... + 19910606.

Almost surely, 2^20168931300 is an apocalyptic number.

20168931300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20168931300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35206080000).

20168931300 is an abundant number, since it is smaller than the sum of its proper divisors (50243228700).

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

20168931300 is a wasteful number, since it uses less digits than its factorization.

20168931300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 20168931300 in words is "twenty billion, one hundred sixty-eight million, nine hundred thirty-one thousand, three hundred".