12750657768 has 40 divisors (see below), whose sum is σ = 35713649730. Its totient is φ = 4250219040.

The previous prime is 12750657767. The next prime is 12750657779. The reversal of 12750657768 is 86775605721.

It is a happy number.

12750657768 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 0 + 6 + 577 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12330325764 + 420332004 = 111042^2 + 20502^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12750657761) 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 9 ways as a sum of consecutive naturals, for example, 9837823 + ... + 9839118.

Almost surely, 2^12750657768 is an apocalyptic number.

12750657768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12750657768 is an abundant number, since it is smaller than the sum of its proper divisors (22962991962).

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

12750657768 is a wasteful number, since it uses less digits than its factorization.

12750657768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19676959 (or 19676946 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The spelling of 12750657768 in words is "twelve billion, seven hundred fifty million, six hundred fifty-seven thousand, seven hundred sixty-eight".