1356342421518 has 288 divisors, whose sum is σ = 3562769733120. Its totient is φ = 371559767040.

The previous prime is 1356342421507. The next prime is 1356342421519. The reversal of 1356342421518 is 8151242436531.

1356342421518 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 3 + 424 + 215 + 1 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356342421519) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 863361673 + ... + 863363243.

It is an arithmetic number, because the mean of its divisors is an integer number (12370728240).

Almost surely, 2^{1356342421518} is an apocalyptic number.

1356342421518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356342421518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781384866560).

1356342421518 is an abundant number, since it is smaller than the sum of its proper divisors (2206427311602).

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

1356342421518 is a wasteful number, since it uses less digits than its factorization.

1356342421518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052 (or 2042 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 1356342421518 in words is "one trillion, three hundred fifty-six billion, three hundred forty-two million, four hundred twenty-one thousand, five hundred eighteen".