16863704285 has 8 divisors (see below), whose sum is σ = 21426824376. Its totient is φ = 12697377280.

The previous prime is 16863704281. The next prime is 16863704287. The reversal of 16863704285 is 58240736861.

It can be written as a sum of positive squares in 4 ways, for example, as 5274535876 + 11589168409 = 72626^2 + 107653^2 .

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

It is not a de Polignac number, because 16863704285 - 2² = 16863704281 is a prime.

It is a super-2 number, since 2×16863704285² (a number of 21 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 (16863704281) 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, 99198176 + ... + 99198345.

It is an arithmetic number, because the mean of its divisors is an integer number (2678353047).

Almost surely, 2^16863704285 is an apocalyptic number.

It is an amenable number.

16863704285 is a deficient number, since it is larger than the sum of its proper divisors (4563120091).

16863704285 is a wasteful number, since it uses less digits than its factorization.

16863704285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198396543.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 16863704285 in words is "sixteen billion, eight hundred sixty-three million, seven hundred four thousand, two hundred eighty-five".