13821468049515 has 32 divisors (see below), whose sum is σ = 26145043015680. Its totient is φ = 6100510034304.

The previous prime is 13821468049513. The next prime is 13821468049531. The reversal of 13821468049515 is 51594086412831.

It is not a de Polignac number, because 13821468049515 - 2¹ = 13821468049513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13821468049513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2269531939 + ... + 2269538028.

It is an arithmetic number, because the mean of its divisors is an integer number (817032594240).

Almost surely, 2^{13821468049515} is an apocalyptic number.

13821468049515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13821468049515 is a deficient number, since it is larger than the sum of its proper divisors (12323574966165).

13821468049515 is a wasteful number, since it uses less digits than its factorization.

13821468049515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539070011.

The product of its (nonzero) digits is 8294400, while the sum is 57.

The spelling of 13821468049515 in words is "thirteen trillion, eight hundred twenty-one billion, four hundred sixty-eight million, forty-nine thousand, five hundred fifteen".