1218295065792 has 336 divisors, whose sum is σ = 3923724244992. Its totient is φ = 332235509760.

The previous prime is 1218295065787. The next prime is 1218295065797. The reversal of 1218295065792 is 2975605928121.

It is an interprime number because it is at equal distance from previous prime (1218295065787) and next prime (1218295065797).

It is a tau number, because it is divible by the number of its divisors (336).

It is not an unprimeable number, because it can be changed into a prime (1218295065797) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 21261693 + ... + 21318915.

Almost surely, 2^{1218295065792} is an apocalyptic number.

1218295065792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218295065792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1961862122496).

1218295065792 is an abundant number, since it is smaller than the sum of its proper divisors (2705429179200).

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

1218295065792 is a wasteful number, since it uses less digits than its factorization.

1218295065792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57356 (or 57339 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 1218295065792 in words is "one trillion, two hundred eighteen billion, two hundred ninety-five million, sixty-five thousand, seven hundred ninety-two".