16875823561 has 2 divisors, whose sum is σ = 16875823562. Its totient is φ = 16875823560.

The previous prime is 16875823529. The next prime is 16875823583. The reversal of 16875823561 is 16532857861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12136327225 + 4739496336 = 110165^2 + 68844^2 .

It is a cyclic number.

It is not a de Polignac number, because 16875823561 - 2⁵ = 16875823529 is a prime.

It is a super-3 number, since 3×16875823561³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16875823499 and 16875823508.

It is not a weakly prime, because it can be changed into another prime (16875823661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8437911780 + 8437911781.

It is an arithmetic number, because the mean of its divisors is an integer number (8437911781).

Almost surely, 2^16875823561 is an apocalyptic number.

It is an amenable number.

16875823561 is a deficient number, since it is larger than the sum of its proper divisors (1).

16875823561 is an equidigital number, since it uses as much as digits as its factorization.

16875823561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 52.

The spelling of 16875823561 in words is "sixteen billion, eight hundred seventy-five million, eight hundred twenty-three thousand, five hundred sixty-one".