12636261056 has 14 divisors (see below), whose sum is σ = 25075080660. Its totient is φ = 6318130496.

The previous prime is 12636260971. The next prime is 12636261119. The reversal of 12636261056 is 65016263621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98720726 + ... + 98720853.

It is an arithmetic number, because the mean of its divisors is an integer number (1791077190).

Almost surely, 2^12636261056 is an apocalyptic number.

12636261056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12636261056 is a deficient number, since it is larger than the sum of its proper divisors (12438819604).

12636261056 is an equidigital number, since it uses as much as digits as its factorization.

12636261056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197441591 (or 197441581 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 12636261056 in words is "twelve billion, six hundred thirty-six million, two hundred sixty-one thousand, fifty-six".