12686367772550 has 48 divisors (see below), whose sum is σ = 23806663521552. Its totient is φ = 5029386163200.

The previous prime is 12686367772537. The next prime is 12686367772577. The reversal of 12686367772550 is 5527776368621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144974810 + ... + 145062290.

It is an arithmetic number, because the mean of its divisors is an integer number (495972156699).

Almost surely, 2^{12686367772550} is an apocalyptic number.

12686367772550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12686367772550 is a deficient number, since it is larger than the sum of its proper divisors (11120295749002).

12686367772550 is a wasteful number, since it uses less digits than its factorization.

12686367772550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113273 (or 113268 counting only the distinct ones).

The product of its (nonzero) digits is 177811200, while the sum is 65.

The spelling of 12686367772550 in words is "twelve trillion, six hundred eighty-six billion, three hundred sixty-seven million, seven hundred seventy-two thousand, five hundred fifty".