1275012638764 has 24 divisors (see below), whose sum is σ = 2363116763840. Its totient is φ = 600248114064.

The previous prime is 1275012638761. The next prime is 1275012638797. The reversal of 1275012638764 is 4678362105721.

It is not an unprimeable number, because it can be changed into a prime (1275012638761) 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 7 ways as a sum of consecutive naturals, for example, 51449214 + ... + 51473989.

Almost surely, 2^{1275012638764} is an apocalyptic number.

It is an amenable number.

1275012638764 is a deficient number, since it is larger than the sum of its proper divisors (1088104125076).

1275012638764 is a wasteful number, since it uses less digits than its factorization.

1275012638764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102923389 (or 102923387 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 1275012638764 in words is "one trillion, two hundred seventy-five billion, twelve million, six hundred thirty-eight thousand, seven hundred sixty-four".