1297817239712 has 48 divisors (see below), whose sum is σ = 2969581849920. Its totient is φ = 546780139008.

The previous prime is 1297817239619. The next prime is 1297817239723. The reversal of 1297817239712 is 2179327187921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (59).

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, 49087013 + ... + 49113444.

It is an arithmetic number, because the mean of its divisors is an integer number (61866288540).

Almost surely, 2^{1297817239712} is an apocalyptic number.

It is an amenable number.

1297817239712 is an abundant number, since it is smaller than the sum of its proper divisors (1671764610208).

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

1297817239712 is an equidigital number, since it uses as much as digits as its factorization.

1297817239712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98200533 (or 98200525 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 59.

The spelling of 1297817239712 in words is "one trillion, two hundred ninety-seven billion, eight hundred seventeen million, two hundred thirty-nine thousand, seven hundred twelve".