1704288556561 has 32 divisors (see below), whose sum is σ = 1834171637760. Its totient is φ = 1577876495616.

The previous prime is 1704288556517. The next prime is 1704288556627. The reversal of 1704288556561 is 1656558824071.

It is a de Polignac number, because none of the positive numbers 2^k-1704288556561 is a prime.

It is a super-2 number, since 2×1704288556561² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1704288556496 and 1704288556505.

It is not an unprimeable number, because it can be changed into a prime (1704288556501) 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 31 ways as a sum of consecutive naturals, for example, 626805760 + ... + 626808478.

It is an arithmetic number, because the mean of its divisors is an integer number (57317863680).

Almost surely, 2^{1704288556561} is an apocalyptic number.

It is an amenable number.

1704288556561 is a deficient number, since it is larger than the sum of its proper divisors (129883081199).

1704288556561 is a wasteful number, since it uses less digits than its factorization.

1704288556561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573.

The product of its (nonzero) digits is 16128000, while the sum is 58.

The spelling of 1704288556561 in words is "one trillion, seven hundred four billion, two hundred eighty-eight million, five hundred fifty-six thousand, five hundred sixty-one".