16865601056 has 12 divisors (see below), whose sum is σ = 33204152142. Its totient is φ = 8432800512.

The previous prime is 16865601031. The next prime is 16865601061. The reversal of 16865601056 is 65010656861.

It can be written as a sum of positive squares in only one way, i.e., 16174752400 + 690848656 = 127180^2 + 26284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16865600998 and 16865601016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263524985 + ... + 263525048.

Almost surely, 2^16865601056 is an apocalyptic number.

16865601056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16865601056 is a deficient number, since it is larger than the sum of its proper divisors (16338551086).

16865601056 is an equidigital number, since it uses as much as digits as its factorization.

16865601056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527050043 (or 527050035 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 16865601056 in words is "sixteen billion, eight hundred sixty-five million, six hundred one thousand, fifty-six".