38784727851173 has 4 divisors (see below), whose sum is σ = 38784785284140. Its totient is φ = 38784670418208.

The previous prime is 38784727851127. The next prime is 38784727851223. The reversal of 38784727851173 is 37115872748783.

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 30852714648484 + 7932013202689 = 5554522^2 + 2816383^2 .

It is a cyclic number.

It is not a de Polignac number, because 38784727851173 - 2¹⁰ = 38784727850149 is a prime.

It is a super-2 number, since 2×38784727851173² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38784727851097 and 38784727851106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38784726851173) 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, 27691328 + ... + 29058201.

It is an arithmetic number, because the mean of its divisors is an integer number (9696196321035).

Almost surely, 2^{38784727851173} is an apocalyptic number.

It is an amenable number.

38784727851173 is a deficient number, since it is larger than the sum of its proper divisors (57432967).

38784727851173 is an equidigital number, since it uses as much as digits as its factorization.

38784727851173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57432966.

The product of its digits is 442552320, while the sum is 71.

The spelling of 38784727851173 in words is "thirty-eight trillion, seven hundred eighty-four billion, seven hundred twenty-seven million, eight hundred fifty-one thousand, one hundred seventy-three".