12871054656 has 224 divisors, whose sum is σ = 40138502400. Its totient is φ = 4035778560.

The previous prime is 12871054643. The next prime is 12871054657. The reversal of 12871054656 is 65645017821.

12871054656 is a `hidden beast` number, since 1 + 2 + 87 + 105 + 465 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871054657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2421730 + ... + 2427038.

Almost surely, 2^12871054656 is an apocalyptic number.

12871054656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12871054656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20069251200).

12871054656 is an abundant number, since it is smaller than the sum of its proper divisors (27267447744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12871054656 is a wasteful number, since it uses less digits than its factorization.

12871054656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5414 (or 5398 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 12871054656 in words is "twelve billion, eight hundred seventy-one million, fifty-four thousand, six hundred fifty-six".