20188670976 has 264 divisors, whose sum is σ = 60008869440. Its totient is φ = 6534782976.

The previous prime is 20188670927. The next prime is 20188670987. The reversal of 20188670976 is 67907688102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58180435 + ... + 58180781.

Almost surely, 2^20188670976 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 20188670976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30004434720).

20188670976 is an abundant number, since it is smaller than the sum of its proper divisors (39820198464).

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

20188670976 is a wasteful number, since it uses less digits than its factorization.

20188670976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 20188670976 in words is "twenty billion, one hundred eighty-eight million, six hundred seventy thousand, nine hundred seventy-six".