16853687461 has 8 divisors (see below), whose sum is σ = 18242260344. Its totient is φ = 15478276800.

The previous prime is 16853687453. The next prime is 16853687467. The reversal of 16853687461 is 16478635861.

It can be written as a sum of positive squares in 4 ways, for example, as 3282602436 + 13571085025 = 57294^2 + 116495^2 .

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 16853687461 - 2³ = 16853687453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16853687467) 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, 3287890 + ... + 3293011.

It is an arithmetic number, because the mean of its divisors is an integer number (2280282543).

Almost surely, 2^16853687461 is an apocalyptic number.

It is an amenable number.

16853687461 is a deficient number, since it is larger than the sum of its proper divisors (1388572883).

16853687461 is a wasteful number, since it uses less digits than its factorization.

16853687461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581111.

The product of its digits is 5806080, while the sum is 55.

The spelling of 16853687461 in words is "sixteen billion, eight hundred fifty-three million, six hundred eighty-seven thousand, four hundred sixty-one".