13215248449 has 32 divisors (see below), whose sum is σ = 14861100800. Its totient is φ = 11672024832.

The previous prime is 13215248411. The next prime is 13215248471. The reversal of 13215248449 is 94484251231.

It is not a de Polignac number, because 13215248449 - 2¹⁹ = 13214724161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13215248479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7777402 + ... + 7779100.

It is an arithmetic number, because the mean of its divisors is an integer number (464409400).

Almost surely, 2^13215248449 is an apocalyptic number.

It is an amenable number.

13215248449 is a deficient number, since it is larger than the sum of its proper divisors (1645852351).

13215248449 is a wasteful number, since it uses less digits than its factorization.

13215248449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009.

The product of its digits is 276480, while the sum is 43.

The spelling of 13215248449 in words is "thirteen billion, two hundred fifteen million, two hundred forty-eight thousand, four hundred forty-nine".