1685560866047 has 8 divisors (see below), whose sum is σ = 1690016202240. Its totient is φ = 1681105813920.

The previous prime is 1685560865969. The next prime is 1685560866049. The reversal of 1685560866047 is 7406680655861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1685560866047 - 2²⁰ = 1685559817471 is a prime.

It is a super-2 number, since 2×1685560866047² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685560866049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17578229 + ... + 17673857.

It is an arithmetic number, because the mean of its divisors is an integer number (211252025280).

Almost surely, 2^{1685560866047} is an apocalyptic number.

1685560866047 is a deficient number, since it is larger than the sum of its proper divisors (4455336193).

1685560866047 is an equidigital number, since it uses as much as digits as its factorization.

1685560866047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142033.

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 1685560866047 in words is "one trillion, six hundred eighty-five billion, five hundred sixty million, eight hundred sixty-six thousand, forty-seven".