16705610563 has 4 divisors (see below), whose sum is σ = 16718693760. Its totient is φ = 16692527368.

The previous prime is 16705610561. The next prime is 16705610567. The reversal of 16705610563 is 36501650761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16705610563 - 2¹ = 16705610561 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16705610561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6539683 + ... + 6542236.

It is an arithmetic number, because the mean of its divisors is an integer number (4179673440).

Almost surely, 2^16705610563 is an apocalyptic number.

16705610563 is a deficient number, since it is larger than the sum of its proper divisors (13083197).

16705610563 is a wasteful number, since it uses less digits than its factorization.

16705610563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13083196.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 16705610563 in words is "sixteen billion, seven hundred five million, six hundred ten thousand, five hundred sixty-three".