16351464606561 has 32 divisors (see below), whose sum is σ = 28433263220480. Its totient is φ = 9091161785088.

The previous prime is 16351464606559. The next prime is 16351464606563. The reversal of 16351464606561 is 16560646415361.

16351464606561 is a `hidden beast` number, since 1 + 6 + 3 + 5 + 1 + 464 + 60 + 65 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (16351464606559) and next prime (16351464606563).

It is not a de Polignac number, because 16351464606561 - 2¹ = 16351464606559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16351464606498 and 16351464606507.

It is not an unprimeable number, because it can be changed into a prime (16351464606563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1169123896 + ... + 1169137881.

It is an arithmetic number, because the mean of its divisors is an integer number (888539475640).

Almost surely, 2^{16351464606561} is an apocalyptic number.

It is an amenable number.

16351464606561 is a deficient number, since it is larger than the sum of its proper divisors (12081798613919).

16351464606561 is a wasteful number, since it uses less digits than its factorization.

16351464606561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338261830 (or 2338261824 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 16351464606561 in words is "sixteen trillion, three hundred fifty-one billion, four hundred sixty-four million, six hundred six thousand, five hundred sixty-one".