2849561813815 has 16 divisors (see below), whose sum is σ = 3571168430016. Its totient is φ = 2178687808000.

The previous prime is 2849561813801. The next prime is 2849561813821. The reversal of 2849561813815 is 5183181659482.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2849561813815 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10354786 + ... + 10626415.

It is an arithmetic number, because the mean of its divisors is an integer number (223198026876).

Almost surely, 2^{2849561813815} is an apocalyptic number.

2849561813815 is a deficient number, since it is larger than the sum of its proper divisors (721606616201).

2849561813815 is a wasteful number, since it uses less digits than its factorization.

2849561813815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20982410.

The product of its digits is 16588800, while the sum is 61.

The spelling of 2849561813815 in words is "two trillion, eight hundred forty-nine billion, five hundred sixty-one million, eight hundred thirteen thousand, eight hundred fifteen".