1665082622123 has 6 divisors (see below), whose sum is σ = 1684001634804. Its totient is φ = 1646373820784.

The previous prime is 1665082622087. The next prime is 1665082622201. The reversal of 1665082622123 is 3212262805661.

It is not a de Polignac number, because 1665082622123 - 2¹⁰ = 1665082621099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1665082622023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105097661 + ... + 105113502.

It is an arithmetic number, because the mean of its divisors is an integer number (280666939134).

Almost surely, 2^{1665082622123} is an apocalyptic number.

1665082622123 is a deficient number, since it is larger than the sum of its proper divisors (18919012681).

1665082622123 is an frugal number, since it uses more digits than its factorization.

1665082622123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210211341 (or 210211252 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 1665082622123 in words is "one trillion, six hundred sixty-five billion, eighty-two million, six hundred twenty-two thousand, one hundred twenty-three".