12755780544 has 224 divisors, whose sum is σ = 38624475456. Its totient is φ = 3680501760.

The previous prime is 12755780539. The next prime is 12755780567. The reversal of 12755780544 is 44508755721.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 12755780493 and 12755780502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22106784 + ... + 22107360.

It is an arithmetic number, because the mean of its divisors is an integer number (172430694).

Almost surely, 2^12755780544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12755780544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19312237728).

12755780544 is an abundant number, since it is smaller than the sum of its proper divisors (25868694912).

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

12755780544 is a wasteful number, since it uses less digits than its factorization.

12755780544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 1568000, while the sum is 48.

The spelling of 12755780544 in words is "twelve billion, seven hundred fifty-five million, seven hundred eighty thousand, five hundred forty-four".