16237222721409 has 16 divisors (see below), whose sum is σ = 21720112775424. Its totient is φ = 10789589197200.

The previous prime is 16237222721407. The next prime is 16237222721453. The reversal of 16237222721409 is 90412722273261.

It is a happy number.

It is not a de Polignac number, because 16237222721409 - 2¹ = 16237222721407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16237222721407) 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, 2344114 + ... + 6161924.

It is an arithmetic number, because the mean of its divisors is an integer number (1357507048464).

Almost surely, 2^{16237222721409} is an apocalyptic number.

It is an amenable number.

16237222721409 is a deficient number, since it is larger than the sum of its proper divisors (5482890054015).

16237222721409 is a wasteful number, since it uses less digits than its factorization.

16237222721409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822428.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 16237222721409 in words is "sixteen trillion, two hundred thirty-seven billion, two hundred twenty-two million, seven hundred twenty-one thousand, four hundred nine".