13161421332 has 72 divisors (see below), whose sum is σ = 33702013800. Its totient is φ = 4330303488.

The previous prime is 13161421319. The next prime is 13161421333. The reversal of 13161421332 is 23312416131.

It is a happy number.

13161421332 is a `hidden beast` number, since 1 + 3 + 1 + 614 + 2 + 13 + 32 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 852406416 + 12309014916 = 29196^2 + 110946^2 .

It is a super-2 number, since 2×13161421332² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13161421296 and 13161421305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13161421333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1353544 + ... + 1363232.

It is an arithmetic number, because the mean of its divisors is an integer number (468083525).

Almost surely, 2^13161421332 is an apocalyptic number.

13161421332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13161421332 is an abundant number, since it is smaller than the sum of its proper divisors (20540592468).

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

13161421332 is a wasteful number, since it uses less digits than its factorization.

13161421332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10185 (or 10180 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 13161421332 its reverse (23312416131), we get a palindrome (36473837463).

The spelling of 13161421332 in words is "thirteen billion, one hundred sixty-one million, four hundred twenty-one thousand, three hundred thirty-two".