15513341213 has 4 divisors (see below), whose sum is σ = 15519859068. Its totient is φ = 15506823360.

The previous prime is 15513341149. The next prime is 15513341227. The reversal of 15513341213 is 31214331551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3470034649 + 12043306564 = 58907^2 + 109742^2 .

It is a cyclic number.

It is not a de Polignac number, because 15513341213 - 2⁶ = 15513341149 is a prime.

It is a super-2 number, since 2×15513341213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15513341413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3255356 + ... + 3260117.

It is an arithmetic number, because the mean of its divisors is an integer number (3879964767).

Almost surely, 2^15513341213 is an apocalyptic number.

It is an amenable number.

15513341213 is a deficient number, since it is larger than the sum of its proper divisors (6517855).

15513341213 is an equidigital number, since it uses as much as digits as its factorization.

15513341213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517854.

The product of its digits is 5400, while the sum is 29.

Adding to 15513341213 its reverse (31214331551), we get a palindrome (46727672764).

The spelling of 15513341213 in words is "fifteen billion, five hundred thirteen million, three hundred forty-one thousand, two hundred thirteen".