20537087688 has 576 divisors, whose sum is σ = 68841864000. Its totient is φ = 5477041152.

The previous prime is 20537087663. The next prime is 20537087723. The reversal of 20537087688 is 88678073502.

20537087688 is a `hidden beast` number, since 20 + 537 + 0 + 8 + 7 + 6 + 88 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 348086203 + ... + 348086261.

It is an arithmetic number, because the mean of its divisors is an integer number (119517125).

Almost surely, 2^20537087688 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 20537087688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34420932000).

20537087688 is an abundant number, since it is smaller than the sum of its proper divisors (48304776312).

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

20537087688 is a wasteful number, since it uses less digits than its factorization.

20537087688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 20537087688 in words is "twenty billion, five hundred thirty-seven million, eighty-seven thousand, six hundred eighty-eight".