16331347382121 has 48 divisors (see below), whose sum is σ = 24918522071040. Its totient is φ = 10278348215040.

The previous prime is 16331347382101. The next prime is 16331347382137. The reversal of 16331347382121 is 12128374313361.

16331347382121 is a `hidden beast` number, since 1 + 6 + 331 + 34 + 73 + 8 + 212 + 1 = 666.

It is not a de Polignac number, because 16331347382121 - 2⁵ = 16331347382089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16331347382101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73044061 + ... + 73267301.

It is an arithmetic number, because the mean of its divisors is an integer number (519135876480).

Almost surely, 2^{16331347382121} is an apocalyptic number.

It is an amenable number.

16331347382121 is a deficient number, since it is larger than the sum of its proper divisors (8587174688919).

16331347382121 is a wasteful number, since it uses less digits than its factorization.

16331347382121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224766 (or 224763 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 16331347382121 in words is "sixteen trillion, three hundred thirty-one billion, three hundred forty-seven million, three hundred eighty-two thousand, one hundred twenty-one".