2108381944385 has 8 divisors (see below), whose sum is σ = 2530066272000. Its totient is φ = 1686700263024.

The previous prime is 2108381944367. The next prime is 2108381944433. The reversal of 2108381944385 is 5834491838012.

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

It is a cyclic number.

It is not a de Polignac number, because 2108381944385 - 2⁸ = 2108381944129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2108381944385.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2281616 + ... + 3069614.

It is an arithmetic number, because the mean of its divisors is an integer number (316258284000).

Almost surely, 2^{2108381944385} is an apocalyptic number.

It is an amenable number.

2108381944385 is a deficient number, since it is larger than the sum of its proper divisors (421684327615).

2108381944385 is an equidigital number, since it uses as much as digits as its factorization.

2108381944385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323127.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 2108381944385 in words is "two trillion, one hundred eight billion, three hundred eighty-one million, nine hundred forty-four thousand, three hundred eighty-five".