1291117246912 has 56 divisors (see below), whose sum is σ = 2606387472000. Its totient is φ = 634397273856.

The previous prime is 1291117246901. The next prime is 1291117246921. The reversal of 1291117246912 is 2196427111921.

It is a happy number.

It is a congruent 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, 11130589 + ... + 11245987.

Almost surely, 2^{1291117246912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1291117246912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1303193736000).

1291117246912 is an abundant number, since it is smaller than the sum of its proper divisors (1315270225088).

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

1291117246912 is a wasteful number, since it uses less digits than its factorization.

1291117246912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118433 (or 118423 counting only the distinct ones).

The product of its digits is 108864, while the sum is 46.

The spelling of 1291117246912 in words is "one trillion, two hundred ninety-one billion, one hundred seventeen million, two hundred forty-six thousand, nine hundred twelve".