13161421333 has 2 divisors, whose sum is σ = 13161421334. Its totient is φ = 13161421332.

The previous prime is 13161421319. The next prime is 13161421397. The reversal of 13161421333 is 33312416131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8269537969 + 4891883364 = 90937^2 + 69942^2 .

It is an emirp because it is prime and its reverse (33312416131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13161421333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13161421633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6580710666 + 6580710667.

It is an arithmetic number, because the mean of its divisors is an integer number (6580710667).

Almost surely, 2^13161421333 is an apocalyptic number.

It is an amenable number.

13161421333 is a deficient number, since it is larger than the sum of its proper divisors (1).

13161421333 is an equidigital number, since it uses as much as digits as its factorization.

13161421333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

Adding to 13161421333 its reverse (33312416131), we get a palindrome (46473837464).

The spelling of 13161421333 in words is "thirteen billion, one hundred sixty-one million, four hundred twenty-one thousand, three hundred thirty-three".