38636544013 has 4 divisors (see below), whose sum is σ = 38819655808. Its totient is φ = 38453432220.

The previous prime is 38636543993. The next prime is 38636544019. The reversal of 38636544013 is 31044563683.

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-38636544013 is a prime.

It is a super-2 number, since 2×38636544013² (a number of 22 digits) 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 (38636544019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91555581 + ... + 91556002.

It is an arithmetic number, because the mean of its divisors is an integer number (9704913952).

Almost surely, 2^38636544013 is an apocalyptic number.

It is an amenable number.

38636544013 is a deficient number, since it is larger than the sum of its proper divisors (183111795).

38636544013 is a wasteful number, since it uses less digits than its factorization.

38636544013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183111794.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 38636544013 in words is "thirty-eight billion, six hundred thirty-six million, five hundred forty-four thousand, thirteen".