12728461054287 has 16 divisors (see below), whose sum is σ = 18790455399552. Its totient is φ = 7599081225120.

The previous prime is 12728461054273. The next prime is 12728461054307. The reversal of 12728461054287 is 78245016482721.

It is not a de Polignac number, because 12728461054287 - 2²³ = 12728452665679 is a prime.

It is a super-2 number, since 2×12728461054287² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728461054217) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2878437648 + ... + 2878442069.

It is an arithmetic number, because the mean of its divisors is an integer number (1174403462472).

Almost surely, 2^{12728461054287} is an apocalyptic number.

12728461054287 is a deficient number, since it is larger than the sum of its proper divisors (6061994345265).

12728461054287 is a wasteful number, since it uses less digits than its factorization.

12728461054287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756879798.

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 12728461054287 in words is "twelve trillion, seven hundred twenty-eight billion, four hundred sixty-one million, fifty-four thousand, two hundred eighty-seven".