2189451465513 has 64 divisors (see below), whose sum is σ = 3642050764800. Its totient is φ = 1290650215680.

The previous prime is 2189451465511. The next prime is 2189451465581. The reversal of 2189451465513 is 3155641549812.

2189451465513 is a `hidden beast` number, since 2 + 1 + 8 + 9 + 45 + 1 + 46 + 551 + 3 = 666.

It is not a de Polignac number, because 2189451465513 - 2¹ = 2189451465511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2189451465513.

It is not an unprimeable number, because it can be changed into a prime (2189451465511) 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 63 ways as a sum of consecutive naturals, for example, 445903 + ... + 2139563.

It is an arithmetic number, because the mean of its divisors is an integer number (56907043200).

Almost surely, 2^{2189451465513} is an apocalyptic number.

It is an amenable number.

2189451465513 is a deficient number, since it is larger than the sum of its proper divisors (1452599299287).

2189451465513 is a wasteful number, since it uses less digits than its factorization.

2189451465513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693839 (or 1693833 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 54.

The spelling of 2189451465513 in words is "two trillion, one hundred eighty-nine billion, four hundred fifty-one million, four hundred sixty-five thousand, five hundred thirteen".