1317108385620 has 384 divisors, whose sum is σ = 4573074240000. Its totient is φ = 312757936128.

The previous prime is 1317108385597. The next prime is 1317108385627. The reversal of 1317108385620 is 265838017131.

It is a happy number.

1317108385620 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 1 + 0 + 83 + 8 + 562 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317108385627) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 144589626 + ... + 144598734.

It is an arithmetic number, because the mean of its divisors is an integer number (11909047500).

Almost surely, 2^{1317108385620} is an apocalyptic number.

1317108385620 is a gapful number since it is divisible by the number (10) 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 1317108385620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286537120000).

1317108385620 is an abundant number, since it is smaller than the sum of its proper divisors (3255965854380).

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

1317108385620 is a wasteful number, since it uses less digits than its factorization.

1317108385620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9992 (or 9984 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 1317108385620 in words is "one trillion, three hundred seventeen billion, one hundred eight million, three hundred eighty-five thousand, six hundred twenty".