12738261676550 has 12 divisors (see below), whose sum is σ = 23693166718476. Its totient is φ = 5095304670600.

The previous prime is 12738261676513. The next prime is 12738261676561. The reversal of 12738261676550 is 5567616283721.

It is a self number, because there is not a number n which added to its sum of digits gives 12738261676550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127382616716 + ... + 127382616815.

It is an arithmetic number, because the mean of its divisors is an integer number (1974430559873).

Almost surely, 2^{12738261676550} is an apocalyptic number.

12738261676550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12738261676550 is a deficient number, since it is larger than the sum of its proper divisors (10954905041926).

12738261676550 is a wasteful number, since it uses less digits than its factorization.

12738261676550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254765233543 (or 254765233538 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 12738261676550 in words is "twelve trillion, seven hundred thirty-eight billion, two hundred sixty-one million, six hundred seventy-six thousand, five hundred fifty".