12873365856 has 96 divisors (see below), whose sum is σ = 40435607520. Its totient is φ = 3961032192.

The previous prime is 12873365837. The next prime is 12873365861. The reversal of 12873365856 is 65856337821.

12873365856 is a `hidden beast` number, since 1 + 28 + 7 + 3 + 36 + 585 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×12873365856² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561835 + ... + 584298.

It is an arithmetic number, because the mean of its divisors is an integer number (421204245).

Almost surely, 2^12873365856 is an apocalyptic number.

12873365856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12873365856 is an abundant number, since it is smaller than the sum of its proper divisors (27562241664).

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

12873365856 is a wasteful number, since it uses less digits than its factorization.

12873365856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146165 (or 1146151 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 12873365856 in words is "twelve billion, eight hundred seventy-three million, three hundred sixty-five thousand, eight hundred fifty-six".