20081176560 has 300 divisors, whose sum is σ = 74095783608. Its totient is φ = 5039511552.

The previous prime is 20081176499. The next prime is 20081176597. The reversal of 20081176560 is 6567118002.

20081176560 is a `hidden beast` number, since 2 + 0 + 0 + 81 + 17 + 6 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1867359 + ... + 1878081.

Almost surely, 2^20081176560 is an apocalyptic number.

20081176560 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 20081176560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37047891804).

20081176560 is an abundant number, since it is smaller than the sum of its proper divisors (54014607048).

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

20081176560 is a wasteful number, since it uses less digits than its factorization.

20081176560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10782 (or 10750 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 20081176560 in words is "twenty billion, eighty-one million, one hundred seventy-six thousand, five hundred sixty".