38145877205 has 4 divisors (see below), whose sum is σ = 45775052652. Its totient is φ = 30516701760.

The previous prime is 38145877139. The next prime is 38145877219. The reversal of 38145877205 is 50277854183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50277854183 = 1543 ⋅32584481.

It can be written as a sum of positive squares in 2 ways, for example, as 9123688324 + 29022188881 = 95518^2 + 170359^2 .

It is not a de Polignac number, because 38145877205 - 2¹⁴ = 38145860821 is a prime.

It is a super-2 number, since 2×38145877205² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 3814587716 + ... + 3814587725.

It is an arithmetic number, because the mean of its divisors is an integer number (11443763163).

Almost surely, 2^38145877205 is an apocalyptic number.

It is an amenable number.

38145877205 is a deficient number, since it is larger than the sum of its proper divisors (7629175447).

38145877205 is an equidigital number, since it uses as much as digits as its factorization.

38145877205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629175446.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 38145877205 in words is "thirty-eight billion, one hundred forty-five million, eight hundred seventy-seven thousand, two hundred five".