1276127879999 has 8 divisors (see below), whose sum is σ = 1461354576000. Its totient is φ = 1091631862296.

The previous prime is 1276127879989. The next prime is 1276127880007. The reversal of 1276127879999 is 9999787216721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1276127879999 - 2²⁸ = 1275859444543 is a prime.

It is a super-2 number, since 2×1276127879999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276127879989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182665829 + ... + 182672814.

It is an arithmetic number, because the mean of its divisors is an integer number (182669322000).

Almost surely, 2^{1276127879999} is an apocalyptic number.

1276127879999 is a deficient number, since it is larger than the sum of its proper divisors (185226696001).

1276127879999 is an equidigital number, since it uses as much as digits as its factorization.

1276127879999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365339149.

The product of its digits is 432081216, while the sum is 77.

The spelling of 1276127879999 in words is "one trillion, two hundred seventy-six billion, one hundred twenty-seven million, eight hundred seventy-nine thousand, nine hundred ninety-nine".