12256660253605 has 8 divisors (see below), whose sum is σ = 14842928014200. Its totient is φ = 9715371062976.

The previous prime is 12256660253543. The next prime is 12256660253627. The reversal of 12256660253605 is 50635206665221.

It can be written as a sum of positive squares in 4 ways, for example, as 4192690331236 + 8063969922369 = 2047606^2 + 2839713^2 .

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 12256660253605 - 2¹³ = 12256660245413 is a prime.

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, 11244641890 + ... + 11244642979.

It is an arithmetic number, because the mean of its divisors is an integer number (1855366001775).

Almost surely, 2^{12256660253605} is an apocalyptic number.

It is an amenable number.

12256660253605 is a deficient number, since it is larger than the sum of its proper divisors (2586267760595).

12256660253605 is a wasteful number, since it uses less digits than its factorization.

12256660253605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22489284983.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 12256660253605 in words is "twelve trillion, two hundred fifty-six billion, six hundred sixty million, two hundred fifty-three thousand, six hundred five".