13405424502321 has 12 divisors (see below), whose sum is σ = 19886725838772. Its totient is φ = 8695410487776.

The previous prime is 13405424502277. The next prime is 13405424502359. The reversal of 13405424502321 is 12320542450431.

It is a happy number.

13405424502321 is a `hidden beast` number, since 1 + 3 + 40 + 54 + 245 + 0 + 2 + 321 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8931729960000 + 4473694542321 = 2988600^2 + 2115111^2 .

It is not a de Polignac number, because 13405424502321 - 2¹⁵ = 13405424469553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13405424502391) 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 11 ways as a sum of consecutive naturals, for example, 20128264686 + ... + 20128265351.

It is an arithmetic number, because the mean of its divisors is an integer number (1657227153231).

Almost surely, 2^{13405424502321} is an apocalyptic number.

It is an amenable number.

13405424502321 is a deficient number, since it is larger than the sum of its proper divisors (6481301336451).

13405424502321 is a wasteful number, since it uses less digits than its factorization.

13405424502321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40256530080 (or 40256530077 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 13405424502321 its reverse (12320542450431), we get a palindrome (25725966952752).

The spelling of 13405424502321 in words is "thirteen trillion, four hundred five billion, four hundred twenty-four million, five hundred two thousand, three hundred twenty-one".