16243604652515 has 4 divisors (see below), whose sum is σ = 19492325583024. Its totient is φ = 12994883722008.

The previous prime is 16243604652511. The next prime is 16243604652551. The reversal of 16243604652515 is 51525640634261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16243604652515 - 2² = 16243604652511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16243604652511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624360465247 + ... + 1624360465256.

It is an arithmetic number, because the mean of its divisors is an integer number (4873081395756).

Almost surely, 2^{16243604652515} is an apocalyptic number.

16243604652515 is a deficient number, since it is larger than the sum of its proper divisors (3248720930509).

16243604652515 is an equidigital number, since it uses as much as digits as its factorization.

16243604652515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248720930508.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 16243604652515 in words is "sixteen trillion, two hundred forty-three billion, six hundred four million, six hundred fifty-two thousand, five hundred fifteen".