13215206553 has 8 divisors (see below), whose sum is σ = 18547658400. Its totient is φ = 8346446208.

The previous prime is 13215206539. The next prime is 13215206567. The reversal of 13215206553 is 35560251231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13215206539) and next prime (13215206567).

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

It is not a de Polignac number, because 13215206553 - 2⁹ = 13215206041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13215206503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115922808 + ... + 115922921.

It is an arithmetic number, because the mean of its divisors is an integer number (2318457300).

Almost surely, 2^13215206553 is an apocalyptic number.

It is an amenable number.

13215206553 is a deficient number, since it is larger than the sum of its proper divisors (5332451847).

13215206553 is a wasteful number, since it uses less digits than its factorization.

13215206553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231845751.

The product of its (nonzero) digits is 27000, while the sum is 33.

Adding to 13215206553 its reverse (35560251231), we get a palindrome (48775457784).

The spelling of 13215206553 in words is "thirteen billion, two hundred fifteen million, two hundred six thousand, five hundred fifty-three".