12963916085 has 8 divisors (see below), whose sum is σ = 15558286680. Its totient is φ = 10370074624.

The previous prime is 12963916061. The next prime is 12963916109. The reversal of 12963916085 is 58061936921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12963916061) and next prime (12963916109).

It can be written as a sum of positive squares in 4 ways, for example, as 2139802564 + 10824113521 = 46258^2 + 104039^2 .

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 12963916085 - 2²⁰ = 12962867509 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76220 + ... + 178149.

It is an arithmetic number, because the mean of its divisors is an integer number (1944785835).

Almost surely, 2^12963916085 is an apocalyptic number.

It is an amenable number.

12963916085 is a deficient number, since it is larger than the sum of its proper divisors (2594370595).

12963916085 is a wasteful number, since it uses less digits than its factorization.

12963916085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264567.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 12963916085 in words is "twelve billion, nine hundred sixty-three million, nine hundred sixteen thousand, eighty-five".