16744012773121 has 4 divisors (see below), whose sum is σ = 16906576004032. Its totient is φ = 16581449542212.

The previous prime is 16744012773107. The next prime is 16744012773133. The reversal of 16744012773121 is 12137721044761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16744012773121 - 2¹⁵ = 16744012740353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16744012753121) 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, 81281615301 + ... + 81281615506.

It is an arithmetic number, because the mean of its divisors is an integer number (4226644001008).

Almost surely, 2^{16744012773121} is an apocalyptic number.

It is an amenable number.

16744012773121 is a deficient number, since it is larger than the sum of its proper divisors (162563230911).

16744012773121 is a wasteful number, since it uses less digits than its factorization.

16744012773121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162563230910.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 16744012773121 in words is "sixteen trillion, seven hundred forty-four billion, twelve million, seven hundred seventy-three thousand, one hundred twenty-one".