12315205556266 has 8 divisors (see below), whose sum is σ = 18923364635364. Its totient is φ = 6007417344480.

The previous prime is 12315205556257. The next prime is 12315205556273. The reversal of 12315205556266 is 66265550251321.

It can be written as a sum of positive squares in 2 ways, for example, as 12228106790641 + 87098765625 = 3496871^2 + 295125^2 .

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

It is a super-3 number, since 3×12315205556266³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75092716725 + ... + 75092716888.

Almost surely, 2^{12315205556266} is an apocalyptic number.

12315205556266 is a deficient number, since it is larger than the sum of its proper divisors (6608159079098).

12315205556266 is a wasteful number, since it uses less digits than its factorization.

12315205556266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150185433656.

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 12315205556266 in words is "twelve trillion, three hundred fifteen billion, two hundred five million, five hundred fifty-six thousand, two hundred sixty-six".