20281030088509 has 8 divisors (see below), whose sum is σ = 21014269956000. Its totient is φ = 19550049821232.

The previous prime is 20281030088507. The next prime is 20281030088569. The reversal of 20281030088509 is 90588003018202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20281030088509 - 2¹ = 20281030088507 is a prime.

It is a super-2 number, since 2×20281030088509² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 564881779 + ... + 564917680.

It is an arithmetic number, because the mean of its divisors is an integer number (2626783744500).

Almost surely, 2^{20281030088509} is an apocalyptic number.

20281030088509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20281030088509 is a deficient number, since it is larger than the sum of its proper divisors (733239867491).

20281030088509 is a wasteful number, since it uses less digits than its factorization.

20281030088509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129800107.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 20281030088509 in words is "twenty trillion, two hundred eighty-one billion, thirty million, eighty-eight thousand, five hundred nine".