16772561213447 has 64 divisors (see below), whose sum is σ = 19360373760000. Its totient is φ = 14412492640128.

The previous prime is 16772561213437. The next prime is 16772561213453. The reversal of 16772561213447 is 74431216527761.

It is a cyclic number.

It is not a de Polignac number, because 16772561213447 - 2⁴ = 16772561213431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16772561213392 and 16772561213401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16772561213437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 716795054 + ... + 716818452.

It is an arithmetic number, because the mean of its divisors is an integer number (302505840000).

Almost surely, 2^{16772561213447} is an apocalyptic number.

16772561213447 is a deficient number, since it is larger than the sum of its proper divisors (2587812546553).

16772561213447 is a wasteful number, since it uses less digits than its factorization.

16772561213447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23900.

The product of its digits is 11854080, while the sum is 56.

The spelling of 16772561213447 in words is "sixteen trillion, seven hundred seventy-two billion, five hundred sixty-one million, two hundred thirteen thousand, four hundred forty-seven".