12785403648 has 72 divisors (see below), whose sum is σ = 34045256448. Its totient is φ = 4259617792.

The previous prime is 12785403647. The next prime is 12785403649. The reversal of 12785403648 is 84630458721.

It is an interprime number because it is at equal distance from previous prime (12785403647) and next prime (12785403649).

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 = 12785403597 and 12785403606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12785403647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2318911 + ... + 2324417.

It is an arithmetic number, because the mean of its divisors is an integer number (472850784).

Almost surely, 2^12785403648 is an apocalyptic number.

It is an amenable number.

12785403648 is an abundant number, since it is smaller than the sum of its proper divisors (21259852800).

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

12785403648 is an equidigital number, since it uses as much as digits as its factorization.

12785403648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8549 (or 8535 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 12785403648 in words is "twelve billion, seven hundred eighty-five million, four hundred three thousand, six hundred forty-eight".