12507758442 has 12 divisors (see below), whose sum is σ = 27100143330. Its totient is φ = 4169252808.

The previous prime is 12507758437. The next prime is 12507758443. The reversal of 12507758442 is 24485770521.

12507758442 is a `hidden beast` number, since 1 + 25 + 0 + 7 + 7 + 584 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6509101041 + 5998657401 = 80679^2 + 77451^2 .

It is not an unprimeable number, because it can be changed into a prime (12507758443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 347437717 + ... + 347437752.

Almost surely, 2^12507758442 is an apocalyptic number.

12507758442 is an abundant number, since it is smaller than the sum of its proper divisors (14592384888).

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

12507758442 is a wasteful number, since it uses less digits than its factorization.

12507758442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694875477 (or 694875474 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 12507758442 in words is "twelve billion, five hundred seven million, seven hundred fifty-eight thousand, four hundred forty-two".