13045525321 has 4 divisors (see below), whose sum is σ = 13049459200. Its totient is φ = 13041591444.

The previous prime is 13045525291. The next prime is 13045525327. The reversal of 13045525321 is 12352554031.

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 not a de Polignac number, because 13045525321 - 2⁷ = 13045525193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13045525327) 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, 1961961 + ... + 1968598.

It is an arithmetic number, because the mean of its divisors is an integer number (3262364800).

Almost surely, 2^13045525321 is an apocalyptic number.

It is an amenable number.

13045525321 is a deficient number, since it is larger than the sum of its proper divisors (3933879).

13045525321 is an equidigital number, since it uses as much as digits as its factorization.

13045525321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933878.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 13045525321 in words is "thirteen billion, forty-five million, five hundred twenty-five thousand, three hundred twenty-one".