13200505521 has 16 divisors (see below), whose sum is σ = 20243182464. Its totient is φ = 7495098624.

The previous prime is 13200505517. The next prime is 13200505547. The reversal of 13200505521 is 12550500231.

It is a happy number.

It is not a de Polignac number, because 13200505521 - 2² = 13200505517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13200505491 and 13200505500.

It is not an unprimeable number, because it can be changed into a prime (13200505501) 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 15 ways as a sum of consecutive naturals, for example, 1998600 + ... + 2005193.

It is an arithmetic number, because the mean of its divisors is an integer number (1265198904).

Almost surely, 2^13200505521 is an apocalyptic number.

It is an amenable number.

13200505521 is a deficient number, since it is larger than the sum of its proper divisors (7042676943).

13200505521 is a wasteful number, since it uses less digits than its factorization.

13200505521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003960.

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

The spelling of 13200505521 in words is "thirteen billion, two hundred million, five hundred five thousand, five hundred twenty-one".