20281030088508 has 72 divisors (see below), whose sum is σ = 58672280008160. Its totient is φ = 5786407082880.

The previous prime is 20281030088507. The next prime is 20281030088569. The reversal of 20281030088508 is 80588003018202.

20281030088508 is a `hidden beast` number, since 2 + 0 + 28 + 10 + 30 + 0 + 88 + 508 = 666.

It is a super-2 number, since 2×20281030088508² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20281030088507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56577523 + ... + 56934858.

Almost surely, 2^{20281030088508} is an apocalyptic number.

20281030088508 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20281030088508 is an abundant number, since it is smaller than the sum of its proper divisors (38391249919652).

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

20281030088508 is a wasteful number, since it uses less digits than its factorization.

20281030088508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113513107 (or 113513102 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 20281030088508 in words is "twenty trillion, two hundred eighty-one billion, thirty million, eighty-eight thousand, five hundred eight".