1279129609016 has 16 divisors (see below), whose sum is σ = 2740992019440. Its totient is φ = 548198403840.

The previous prime is 1279129608959. The next prime is 1279129609031. The reversal of 1279129609016 is 6109069219721.

It is a super-2 number, since 2×1279129609016² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11420800025 + ... + 11420800136.

It is an arithmetic number, because the mean of its divisors is an integer number (171312001215).

Almost surely, 2^{1279129609016} is an apocalyptic number.

It is an amenable number.

1279129609016 is an abundant number, since it is smaller than the sum of its proper divisors (1461862410424).

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

1279129609016 is a wasteful number, since it uses less digits than its factorization.

1279129609016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22841600174 (or 22841600170 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 53.

The spelling of 1279129609016 in words is "one trillion, two hundred seventy-nine billion, one hundred twenty-nine million, six hundred nine thousand, sixteen".