13065215733450 has 72 divisors (see below), whose sum is σ = 35107497187308. Its totient is φ = 3483499952640.

The previous prime is 13065215733433. The next prime is 13065215733461. The reversal of 13065215733450 is 5433751256031.

13065215733450 is a `hidden beast` number, since 1 + 3 + 0 + 6 + 5 + 21 + 573 + 3 + 4 + 50 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 11812027280769 + 1253188452681 = 3436863^2 + 1119459^2 .

It is a super-3 number, since 3×13065215733450³ (a number of 40 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 13065215733396 and 13065215733405.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 495544 + ... + 5135756.

Almost surely, 2^{13065215733450} is an apocalyptic number.

13065215733450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13065215733450 is an abundant number, since it is smaller than the sum of its proper divisors (22042281453858).

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

13065215733450 is a wasteful number, since it uses less digits than its factorization.

13065215733450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646488 (or 4646480 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

Adding to 13065215733450 its reverse (5433751256031), we get a palindrome (18498966989481).

The spelling of 13065215733450 in words is "thirteen trillion, sixty-five billion, two hundred fifteen million, seven hundred thirty-three thousand, four hundred fifty".