13515222345 has 8 divisors (see below), whose sum is σ = 21624355776. Its totient is φ = 7208118576.

The previous prime is 13515222319. The next prime is 13515222389. The reversal of 13515222345 is 54322251531.

13515222345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13515222345 - 2⁵ = 13515222313 is a prime.

It is a super-2 number, since 2×13515222345² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 450507397 + ... + 450507426.

It is an arithmetic number, because the mean of its divisors is an integer number (2703044472).

Almost surely, 2^13515222345 is an apocalyptic number.

13515222345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13515222345 is a deficient number, since it is larger than the sum of its proper divisors (8109133431).

13515222345 is an equidigital number, since it uses as much as digits as its factorization.

13515222345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901014831.

The product of its digits is 36000, while the sum is 33.

Adding to 13515222345 its reverse (54322251531), we get a palindrome (67837473876).

The spelling of 13515222345 in words is "thirteen billion, five hundred fifteen million, two hundred twenty-two thousand, three hundred forty-five".