1279127404872 has 96 divisors (see below), whose sum is σ = 3471448125600. Its totient is φ = 425497093632.

The previous prime is 1279127404843. The next prime is 1279127404873. The reversal of 1279127404872 is 2784047219721.

It is a happy number.

1279127404872 is a `hidden beast` number, since 1 + 2 + 7 + 91 + 2 + 74 + 0 + 487 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1279127404873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129108543 + ... + 129118449.

It is an arithmetic number, because the mean of its divisors is an integer number (36160917975).

Almost surely, 2^{1279127404872} is an apocalyptic number.

1279127404872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1279127404872 is an abundant number, since it is smaller than the sum of its proper divisors (2192320720728).

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

1279127404872 is a wasteful number, since it uses less digits than its factorization.

1279127404872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13435 (or 13428 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 1279127404872 in words is "one trillion, two hundred seventy-nine billion, one hundred twenty-seven million, four hundred four thousand, eight hundred seventy-two".