1276327928832 has 176 divisors, whose sum is σ = 3830858379264. Its totient is φ = 374289408000.

The previous prime is 1276327928783. The next prime is 1276327928867. The reversal of 1276327928832 is 2388297236721.

It is a tau number, because it is divible by the number of its divisors (176).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438357 + ... + 1656747.

Almost surely, 2^{1276327928832} is an apocalyptic number.

1276327928832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1276327928832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1915429189632).

1276327928832 is an abundant number, since it is smaller than the sum of its proper divisors (2554530450432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1276327928832 is a wasteful number, since it uses less digits than its factorization.

1276327928832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218456 (or 1218438 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The spelling of 1276327928832 in words is "one trillion, two hundred seventy-six billion, three hundred twenty-seven million, nine hundred twenty-eight thousand, eight hundred thirty-two".