16238847353721 has 16 divisors (see below), whose sum is σ = 21656083613760. Its totient is φ = 10823754905280.

The previous prime is 16238847353653. The next prime is 16238847353737. The reversal of 16238847353721 is 12735374883261.

It is not a de Polignac number, because 16238847353721 - 2¹⁰ = 16238847352697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16238847353761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511588911 + ... + 511620651.

It is an arithmetic number, because the mean of its divisors is an integer number (1353505225860).

Almost surely, 2^{16238847353721} is an apocalyptic number.

It is an amenable number.

16238847353721 is a deficient number, since it is larger than the sum of its proper divisors (5417236260039).

16238847353721 is a wasteful number, since it uses less digits than its factorization.

16238847353721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60136.

The product of its digits is 40642560, while the sum is 60.

The spelling of 16238847353721 in words is "sixteen trillion, two hundred thirty-eight billion, eight hundred forty-seven million, three hundred fifty-three thousand, seven hundred twenty-one".