2117689401444 has 24 divisors (see below), whose sum is σ = 4941328526400. Its totient is φ = 705888859104.

The previous prime is 2117689401397. The next prime is 2117689401593. The reversal of 2117689401444 is 4441049867112.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271657 + ... + 2075855.

It is an arithmetic number, because the mean of its divisors is an integer number (205888688600).

Almost surely, 2^{2117689401444} is an apocalyptic number.

It is an amenable number.

2117689401444 is an abundant number, since it is smaller than the sum of its proper divisors (2823639124956).

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

2117689401444 is a wasteful number, since it uses less digits than its factorization.

2117689401444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902019 (or 1902017 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 2117689401444 in words is "two trillion, one hundred seventeen billion, six hundred eighty-nine million, four hundred one thousand, four hundred forty-four".