20571216117088 has 576 divisors, whose sum is σ = 52188501657600. Its totient is φ = 7770862116864.

The previous prime is 20571216117079. The next prime is 20571216117091. The reversal of 20571216117088 is 88071161217502.

It is a congruent number.

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, 78217551645 + ... + 78217551907.

It is an arithmetic number, because the mean of its divisors is an integer number (90605037600).

Almost surely, 2^{20571216117088} is an apocalyptic number.

20571216117088 is a gapful number since it is divisible by the number (28) 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 20571216117088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26094250828800).

20571216117088 is an abundant number, since it is smaller than the sum of its proper divisors (31617285540512).

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

20571216117088 is a wasteful number, since it uses less digits than its factorization.

20571216117088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 49.

The spelling of 20571216117088 in words is "twenty trillion, five hundred seventy-one billion, two hundred sixteen million, one hundred seventeen thousand, eighty-eight".