16213631243644 has 12 divisors (see below), whose sum is σ = 30042904951584. Its totient is φ = 7629944114624.

The previous prime is 16213631243617. The next prime is 16213631243647. The reversal of 16213631243644 is 44634213631261.

It is a junction number, because it is equal to n+sod(n) for n = 16213631243594 and 16213631243603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16213631243647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119217876724 + ... + 119217876859.

It is an arithmetic number, because the mean of its divisors is an integer number (2503575412632).

Almost surely, 2^{16213631243644} is an apocalyptic number.

It is an amenable number.

16213631243644 is a deficient number, since it is larger than the sum of its proper divisors (13829273707940).

16213631243644 is a wasteful number, since it uses less digits than its factorization.

16213631243644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238435753604 (or 238435753602 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 46.

The spelling of 16213631243644 in words is "sixteen trillion, two hundred thirteen billion, six hundred thirty-one million, two hundred forty-three thousand, six hundred forty-four".