13450791321 has 48 divisors (see below), whose sum is σ = 21923620992. Its totient is φ = 7875705600.

The previous prime is 13450791311. The next prime is 13450791329. The reversal of 13450791321 is 12319705431.

13450791321 is a `hidden beast` number, since 1 + 3 + 450 + 79 + 132 + 1 = 666.

13450791321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13450791321 - 2¹¹ = 13450789273 is a prime.

It is a super-2 number, since 2×13450791321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13450791329) 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 47 ways as a sum of consecutive naturals, for example, 401991 + ... + 434163.

It is an arithmetic number, because the mean of its divisors is an integer number (456742104).

Almost surely, 2^13450791321 is an apocalyptic number.

13450791321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13450791321 is a deficient number, since it is larger than the sum of its proper divisors (8472829671).

13450791321 is a wasteful number, since it uses less digits than its factorization.

13450791321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32334 (or 32331 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 13450791321 in words is "thirteen billion, four hundred fifty million, seven hundred ninety-one thousand, three hundred twenty-one".