1217464312506 has 128 divisors (see below), whose sum is σ = 2679526047744. Its totient is φ = 366514398720.

The previous prime is 1217464312487. The next prime is 1217464312513. The reversal of 1217464312506 is 6052134647121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 394894441 + ... + 394897523.

It is an arithmetic number, because the mean of its divisors is an integer number (20933797248).

Almost surely, 2^{1217464312506} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217464312506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339763023872).

1217464312506 is an abundant number, since it is smaller than the sum of its proper divisors (1462061735238).

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

1217464312506 is a wasteful number, since it uses less digits than its factorization.

1217464312506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708.

The product of its (nonzero) digits is 241920, while the sum is 42.

Adding to 1217464312506 its reverse (6052134647121), we get a palindrome (7269598959627).

The spelling of 1217464312506 in words is "one trillion, two hundred seventeen billion, four hundred sixty-four million, three hundred twelve thousand, five hundred six".