13511000641 has 4 divisors (see below), whose sum is σ = 13840537284. Its totient is φ = 13181464000.

The previous prime is 13511000627. The next prime is 13511000647. The reversal of 13511000641 is 14600011531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3697126416 + 9813874225 = 60804^2 + 99065^2 .

It is a cyclic number.

It is not a de Polignac number, because 13511000641 - 2⁷ = 13511000513 is a prime.

It is a super-2 number, since 2×13511000641² (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 (13511000647) 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, 164768260 + ... + 164768341.

It is an arithmetic number, because the mean of its divisors is an integer number (3460134321).

Almost surely, 2^13511000641 is an apocalyptic number.

It is an amenable number.

13511000641 is a deficient number, since it is larger than the sum of its proper divisors (329536643).

13511000641 is an equidigital number, since it uses as much as digits as its factorization.

13511000641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329536642.

The product of its (nonzero) digits is 360, while the sum is 22.

The spelling of 13511000641 in words is "thirteen billion, five hundred eleven million, six hundred forty-one", and thus it is an aban number.