2399489682545 has 8 divisors (see below), whose sum is σ = 2879398850280. Its totient is φ = 1919584258560.

The previous prime is 2399489682529. The next prime is 2399489682547. The reversal of 2399489682545 is 5452869849932.

It can be written as a sum of positive squares in 4 ways, for example, as 57613440784 + 2341876241761 = 240028^2 + 1530319^2 .

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

It is not a de Polignac number, because 2399489682545 - 2⁴ = 2399489682529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2399489682547) 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 7 ways as a sum of consecutive naturals, for example, 750305 + ... + 2315585.

It is an arithmetic number, because the mean of its divisors is an integer number (359924856285).

Almost surely, 2^{2399489682545} is an apocalyptic number.

It is an amenable number.

2399489682545 is a deficient number, since it is larger than the sum of its proper divisors (479909167735).

2399489682545 is a wasteful number, since it uses less digits than its factorization.

2399489682545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871875.

The product of its digits is 1343692800, while the sum is 74.

The spelling of 2399489682545 in words is "two trillion, three hundred ninety-nine billion, four hundred eighty-nine million, six hundred eighty-two thousand, five hundred forty-five".