1279908834072 has 64 divisors (see below), whose sum is σ = 3491030275200. Its totient is φ = 387810071040.

The previous prime is 1279908834067. The next prime is 1279908834101. The reversal of 1279908834072 is 2704388099721.

It is a junction number, because it is equal to n+sod(n) for n = 1279908833997 and 1279908834015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2287408 + ... + 2791424.

It is an arithmetic number, because the mean of its divisors is an integer number (54547348050).

Almost surely, 2^{1279908834072} is an apocalyptic number.

1279908834072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1279908834072 is an abundant number, since it is smaller than the sum of its proper divisors (2211121441128).

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

1279908834072 is a wasteful number, since it uses less digits than its factorization.

1279908834072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513656 (or 513652 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 1279908834072 in words is "one trillion, two hundred seventy-nine billion, nine hundred eight million, eight hundred thirty-four thousand, seventy-two".