2165454545612 has 12 divisors (see below), whose sum is σ = 3810716101080. Its totient is φ = 1076678516736.

The previous prime is 2165454545599. The next prime is 2165454545641.

It is a happy number.

2165454545612 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×2165454545612³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512188213 + ... + 1512189644.

It is an arithmetic number, because the mean of its divisors is an integer number (317559675090).

Almost surely, 2^{2165454545612} is an apocalyptic number.

It is an amenable number.

2165454545612 is a deficient number, since it is larger than the sum of its proper divisors (1645261555468).

2165454545612 is a wasteful number, since it uses less digits than its factorization.

2165454545612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024378040 (or 3024378038 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 50.

The spelling of 2165454545612 in words is "two trillion, one hundred sixty-five billion, four hundred fifty-four million, five hundred forty-five thousand, six hundred twelve".