1279225589128 has 16 divisors (see below), whose sum is σ = 2400086520000. Its totient is φ = 639202517136.

The previous prime is 1279225589113. The next prime is 1279225589137. The reversal of 1279225589128 is 8219855229721.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51271428 + ... + 51296371.

It is an arithmetic number, because the mean of its divisors is an integer number (150005407500).

Almost surely, 2^{1279225589128} is an apocalyptic number.

It is an amenable number.

1279225589128 is a deficient number, since it is larger than the sum of its proper divisors (1120860930872).

1279225589128 is a wasteful number, since it uses less digits than its factorization.

1279225589128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102569364 (or 102569360 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 61.

The spelling of 1279225589128 in words is "one trillion, two hundred seventy-nine billion, two hundred twenty-five million, five hundred eighty-nine thousand, one hundred twenty-eight".