16461731761121 has 4 divisors (see below), whose sum is σ = 16484007447600. Its totient is φ = 16439456074644.

The previous prime is 16461731761109. The next prime is 16461731761141. The reversal of 16461731761121 is 12116713716461.

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 16461731761121 - 2¹⁸ = 16461731498977 is a prime.

It is a super-2 number, since 2×16461731761121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16461731761141) 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, 11137842131 + ... + 11137843608.

It is an arithmetic number, because the mean of its divisors is an integer number (4121001861900).

Almost surely, 2^{16461731761121} is an apocalyptic number.

It is an amenable number.

16461731761121 is a deficient number, since it is larger than the sum of its proper divisors (22275686479).

16461731761121 is an equidigital number, since it uses as much as digits as its factorization.

16461731761121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22275686478.

The product of its digits is 254016, while the sum is 47.

The spelling of 16461731761121 in words is "sixteen trillion, four hundred sixty-one billion, seven hundred thirty-one million, seven hundred sixty-one thousand, one hundred twenty-one".