12354927786544 has 160 divisors (see below), whose sum is σ = 30537631466496. Its totient is φ = 4717682196480.

The previous prime is 12354927786407. The next prime is 12354927786547. The reversal of 12354927786544 is 44568772945321.

12354927786544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12354927786544² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12354927786544.

It is not an unprimeable number, because it can be changed into a prime (12354927786547) 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, 2793559 + ... + 5702089.

Almost surely, 2^{12354927786544} is an apocalyptic number.

12354927786544 is a gapful number since it is divisible by the number (14) 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 12354927786544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15268815733248).

12354927786544 is an abundant number, since it is smaller than the sum of its proper divisors (18182703679952).

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

12354927786544 is a wasteful number, since it uses less digits than its factorization.

12354927786544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908683 (or 2908677 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 67.

The spelling of 12354927786544 in words is "twelve trillion, three hundred fifty-four billion, nine hundred twenty-seven million, seven hundred eighty-six thousand, five hundred forty-four".