13012541569 has 4 divisors (see below), whose sum is σ = 13041915696. Its totient is φ = 12983167444.

The previous prime is 13012541527. The next prime is 13012541623. The reversal of 13012541569 is 96514521031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96514521031 = 241 ⋅400475191.

It is a cyclic number.

It is not a de Polignac number, because 13012541569 - 2⁷ = 13012541441 is a prime.

It is a super-2 number, since 2×13012541569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13012521569) 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, 14686399 + ... + 14687284.

It is an arithmetic number, because the mean of its divisors is an integer number (3260478924).

Almost surely, 2^13012541569 is an apocalyptic number.

It is an amenable number.

13012541569 is a deficient number, since it is larger than the sum of its proper divisors (29374127).

13012541569 is an equidigital number, since it uses as much as digits as its factorization.

13012541569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29374126.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 13012541569 in words is "thirteen billion, twelve million, five hundred forty-one thousand, five hundred sixty-nine".