13520204501 has 4 divisors (see below), whose sum is σ = 13590991104. Its totient is φ = 13449417900.

The previous prime is 13520204479. The next prime is 13520204527. The reversal of 13520204501 is 10540202531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13520204501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520204801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35393015 + ... + 35393396.

It is an arithmetic number, because the mean of its divisors is an integer number (3397747776).

Almost surely, 2^13520204501 is an apocalyptic number.

It is an amenable number.

13520204501 is a deficient number, since it is larger than the sum of its proper divisors (70786603).

13520204501 is an equidigital number, since it uses as much as digits as its factorization.

13520204501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70786602.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 13520204501 in words is "thirteen billion, five hundred twenty million, two hundred four thousand, five hundred one".