16464546121 has 48 divisors (see below), whose sum is σ = 19514027520. Its totient is φ = 13817018880.

The previous prime is 16464546107. The next prime is 16464546143. The reversal of 16464546121 is 12164546461.

It is a happy number.

16464546121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16464546121 - 2¹⁷ = 16464415049 is a prime.

It is a super-2 number, since 2×16464546121² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16464546191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7037970 + ... + 7040308.

It is an arithmetic number, because the mean of its divisors is an integer number (406542240).

Almost surely, 2^16464546121 is an apocalyptic number.

It is an amenable number.

16464546121 is a deficient number, since it is larger than the sum of its proper divisors (3049481399).

16464546121 is a wasteful number, since it uses less digits than its factorization.

16464546121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462 (or 2443 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The spelling of 16464546121 in words is "sixteen billion, four hundred sixty-four million, five hundred forty-six thousand, one hundred twenty-one".