2108581250917 has 8 divisors (see below), whose sum is σ = 2138982552000. Its totient is φ = 2078378004384.

The previous prime is 2108581250879. The next prime is 2108581250921. The reversal of 2108581250917 is 7190521858012.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2108581250917 is a prime.

It is a super-2 number, since 2×2108581250917² (a number of 25 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 (2108581250947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49492192 + ... + 49534777.

It is an arithmetic number, because the mean of its divisors is an integer number (267372819000).

Almost surely, 2^{2108581250917} is an apocalyptic number.

It is an amenable number.

2108581250917 is a deficient number, since it is larger than the sum of its proper divisors (30401301083).

2108581250917 is a wasteful number, since it uses less digits than its factorization.

2108581250917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99027275.

The product of its (nonzero) digits is 403200, while the sum is 49.

The spelling of 2108581250917 in words is "two trillion, one hundred eight billion, five hundred eighty-one million, two hundred fifty thousand, nine hundred seventeen".