1279559142976 has 21 divisors (see below), whose sum is σ = 2539143131889. Its totient is φ = 639775046784.

The previous prime is 1279559142929. The next prime is 1279559142989. The reversal of 1279559142976 is 6792419559721.

The square root of 1279559142976 is 1131176.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1225094785600 + 54464357376 = 1106840^2 + 233376^2 .

It is a super-2 number, since 2×1279559142976² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 8978710 + ... + 9120106.

It is an arithmetic number, because the mean of its divisors is an integer number (120911577709).

Almost surely, 2^{1279559142976} is an apocalyptic number.

1279559142976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1279559142976 is the 1131176-th square number.

It is an amenable number.

1279559142976 is a deficient number, since it is larger than the sum of its proper divisors (1259583988913).

1279559142976 is an frugal number, since it uses more digits than its factorization.

1279559142976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282806 (or 141399 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 67.

The spelling of 1279559142976 in words is "one trillion, two hundred seventy-nine billion, five hundred fifty-nine million, one hundred forty-two thousand, nine hundred seventy-six".