12718534055646 has 32 divisors (see below), whose sum is σ = 25579792067328. Its totient is φ = 4215758883840.

The previous prime is 12718534055641. The next prime is 12718534055653. The reversal of 12718534055646 is 64655043581721.

It is a super-2 number, since 2×12718534055646² (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 (12718534055641) 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, 2896866 + ... + 5816261.

It is an arithmetic number, because the mean of its divisors is an integer number (799368502104).

Almost surely, 2^{12718534055646} is an apocalyptic number.

12718534055646 is an abundant number, since it is smaller than the sum of its proper divisors (12861258011682).

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

12718534055646 is a wasteful number, since it uses less digits than its factorization.

12718534055646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8714496.

The product of its (nonzero) digits is 24192000, while the sum is 57.

The spelling of 12718534055646 in words is "twelve trillion, seven hundred eighteen billion, five hundred thirty-four million, fifty-five thousand, six hundred forty-six".