6636411013 has 4 divisors (see below), whose sum is σ = 6695140428. Its totient is φ = 6577681600.

The previous prime is 6636410987. The next prime is 6636411043. The reversal of 6636411013 is 3101146366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3101146366 = 2 ⋅1550573183.

It can be written as a sum of positive squares in 2 ways, for example, as 1484329729 + 5152081284 = 38527^2 + 71778^2 .

It is a cyclic number.

It is not a de Polignac number, because 6636411013 - 2⁵ = 6636410981 is a prime.

It is a super-2 number, since 2×6636411013² = 88083902266935372338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636411043) 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, 29364538 + ... + 29364763.

It is an arithmetic number, because the mean of its divisors is an integer number (1673785107).

Almost surely, 2^6636411013 is an apocalyptic number.

It is an amenable number.

6636411013 is a deficient number, since it is larger than the sum of its proper divisors (58729415).

6636411013 is a wasteful number, since it uses less digits than its factorization.

6636411013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58729414.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 6636411013 is about 81464.1701179113. The cubic root of 6636411013 is about 1879.2205737083.

Adding to 6636411013 its reverse (3101146366), we get a palindrome (9737557379).

It can be divided in two parts, 66364 and 11013, that added together give a palindrome (77377).

The spelling of 6636411013 in words is "six billion, six hundred thirty-six million, four hundred eleven thousand, thirteen".