1276112723899 has 16 divisors (see below), whose sum is σ = 1505291346720. Its totient is φ = 1070429391360.

The previous prime is 1276112723881. The next prime is 1276112723929. The reversal of 1276112723899 is 9983272116721.

It is a cyclic number.

It is not a de Polignac number, because 1276112723899 - 2⁵ = 1276112723867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1276112726899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99549897 + ... + 99562714.

It is an arithmetic number, because the mean of its divisors is an integer number (94080709170).

Almost surely, 2^{1276112723899} is an apocalyptic number.

1276112723899 is a deficient number, since it is larger than the sum of its proper divisors (229178622821).

1276112723899 is a wasteful number, since it uses less digits than its factorization.

1276112723899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199112670.

The product of its digits is 4572288, while the sum is 58.

The spelling of 1276112723899 in words is "one trillion, two hundred seventy-six billion, one hundred twelve million, seven hundred twenty-three thousand, eight hundred ninety-nine".