1275265760128 has 16 divisors (see below), whose sum is σ = 2540568506760. Its totient is φ = 637632880000.

The previous prime is 1275265760113. The next prime is 1275265760149. The reversal of 1275265760128 is 8210675625721.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4981506748 + ... + 4981507003.

Almost surely, 2^{1275265760128} is an apocalyptic number.

It is an amenable number.

1275265760128 is a deficient number, since it is larger than the sum of its proper divisors (1265302746632).

1275265760128 is an frugal number, since it uses more digits than its factorization.

1275265760128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963013765 (or 9963013753 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 1275265760128 in words is "one trillion, two hundred seventy-five billion, two hundred sixty-five million, seven hundred sixty thousand, one hundred twenty-eight".