1275166767879 has 12 divisors (see below), whose sum is σ = 1842136779600. Its totient is φ = 850005381984.

The previous prime is 1275166767871. The next prime is 1275166767881. The reversal of 1275166767879 is 9787676615721.

1275166767879 is a `hidden beast` number, since 1 + 27 + 516 + 6 + 7 + 6 + 7 + 87 + 9 = 666.

It is not a de Polignac number, because 1275166767879 - 2³ = 1275166767871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275166767871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8740014 + ... + 8884715.

It is an arithmetic number, because the mean of its divisors is an integer number (153511398300).

Almost surely, 2^{1275166767879} is an apocalyptic number.

1275166767879 is a deficient number, since it is larger than the sum of its proper divisors (566970011721).

1275166767879 is a wasteful number, since it uses less digits than its factorization.

1275166767879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17632774 (or 17632771 counting only the distinct ones).

The product of its digits is 373403520, while the sum is 72.

The spelling of 1275166767879 in words is "one trillion, two hundred seventy-five billion, one hundred sixty-six million, seven hundred sixty-seven thousand, eight hundred seventy-nine".