13220051505 has 16 divisors (see below), whose sum is σ = 21881465280. Its totient is φ = 6807566528.

The previous prime is 13220051483. The next prime is 13220051519. The reversal of 13220051505 is 50515002231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13220051505 - 2²⁹ = 12683180593 is a prime.

It is a super-3 number, since 3×13220051505³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15195027 + ... + 15195896.

It is an arithmetic number, because the mean of its divisors is an integer number (1367591580).

Almost surely, 2^13220051505 is an apocalyptic number.

13220051505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13220051505 is a deficient number, since it is larger than the sum of its proper divisors (8661413775).

13220051505 is a wasteful number, since it uses less digits than its factorization.

13220051505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30390960.

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 13220051505 its reverse (50515002231), we get a palindrome (63735053736).

The spelling of 13220051505 in words is "thirteen billion, two hundred twenty million, fifty-one thousand, five hundred five".