20881023096145 has 8 divisors (see below), whose sum is σ = 25225397029800. Its totient is φ = 16592705600640.

The previous prime is 20881023096091. The next prime is 20881023096181. The reversal of 20881023096145 is 54169032018802.

It can be written as a sum of positive squares in 4 ways, for example, as 751883220544 + 20129139875601 = 867112^2 + 4486551^2 .

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

It is not a de Polignac number, because 20881023096145 - 2⁹ = 20881023095633 is a prime.

It is a super-2 number, since 2×20881023096145² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14014108716 + ... + 14014110205.

It is an arithmetic number, because the mean of its divisors is an integer number (3153174628725).

Almost surely, 2^{20881023096145} is an apocalyptic number.

It is an amenable number.

20881023096145 is a deficient number, since it is larger than the sum of its proper divisors (4344373933655).

20881023096145 is a wasteful number, since it uses less digits than its factorization.

20881023096145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28028219075.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 20881023096145 in words is "twenty trillion, eight hundred eighty-one billion, twenty-three million, ninety-six thousand, one hundred forty-five".