1275127939828 has 12 divisors (see below), whose sum is σ = 2233057633380. Its totient is φ = 637111473152.

The previous prime is 1275127939747. The next prime is 1275127939861. The reversal of 1275127939828 is 8289397215721.

It can be written as a sum of positive squares in 2 ways, for example, as 384335522704 + 890792417124 = 619948^2 + 943818^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1275127939828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113117851 + ... + 113129122.

It is an arithmetic number, because the mean of its divisors is an integer number (186088136115).

Almost surely, 2^{1275127939828} is an apocalyptic number.

It is an amenable number.

1275127939828 is a deficient number, since it is larger than the sum of its proper divisors (957929693552).

1275127939828 is a wasteful number, since it uses less digits than its factorization.

1275127939828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226248386 (or 226248384 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 64.

The spelling of 1275127939828 in words is "one trillion, two hundred seventy-five billion, one hundred twenty-seven million, nine hundred thirty-nine thousand, eight hundred twenty-eight".