38387523727313 has 4 divisors (see below), whose sum is σ = 38387563444068. Its totient is φ = 38387484010560.

The previous prime is 38387523727309. The next prime is 38387523727349. The reversal of 38387523727313 is 31372732578383.

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 15205686905809 + 23181836821504 = 3899447^2 + 4814752^2 .

It is a cyclic number.

It is not a de Polignac number, because 38387523727313 - 2² = 38387523727309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38387523727363) 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, 18371468 + ... + 20354013.

It is an arithmetic number, because the mean of its divisors is an integer number (9596890861017).

Almost surely, 2^{38387523727313} is an apocalyptic number.

It is an amenable number.

38387523727313 is a deficient number, since it is larger than the sum of its proper divisors (39716755).

38387523727313 is an equidigital number, since it uses as much as digits as its factorization.

38387523727313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39716754.

The product of its digits is 106686720, while the sum is 62.

The spelling of 38387523727313 in words is "thirty-eight trillion, three hundred eighty-seven billion, five hundred twenty-three million, seven hundred twenty-seven thousand, three hundred thirteen".