12287639360321 has 12 divisors (see below), whose sum is σ = 14088229746732. Its totient is φ = 10675234192896.

The previous prime is 12287639360281. The next prime is 12287639360329. The reversal of 12287639360321 is 12306393678221.

It can be written as a sum of positive squares in 6 ways, for example, as 953044537600 + 11334594822721 = 976240^2 + 3366689^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12287639360321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12287639360329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2138465516 + ... + 2138471261.

It is an arithmetic number, because the mean of its divisors is an integer number (1174019145561).

Almost surely, 2^{12287639360321} is an apocalyptic number.

It is an amenable number.

12287639360321 is a deficient number, since it is larger than the sum of its proper divisors (1800590386411).

12287639360321 is a wasteful number, since it uses less digits than its factorization.

12287639360321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276936820 (or 4276936807 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 12287639360321 in words is "twelve trillion, two hundred eighty-seven billion, six hundred thirty-nine million, three hundred sixty thousand, three hundred twenty-one".