1279813620416 has 56 divisors (see below), whose sum is σ = 2636707903104. Its totient is φ = 615684925440.

The previous prime is 1279813620383. The next prime is 1279813620439. The reversal of 1279813620416 is 6140263189721.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 1521125 + ... + 2207588.

Almost surely, 2^{1279813620416} is an apocalyptic number.

1279813620416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1279813620416 is an abundant number, since it is smaller than the sum of its proper divisors (1356894282688).

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

1279813620416 is a wasteful number, since it uses less digits than its factorization.

1279813620416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728929 (or 3728919 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 1279813620416 in words is "one trillion, two hundred seventy-nine billion, eight hundred thirteen million, six hundred twenty thousand, four hundred sixteen".