201671338538 has 16 divisors (see below), whose sum is σ = 320310361224. Its totient is φ = 94901544960.

The previous prime is 201671338511. The next prime is 201671338553. The reversal of 201671338538 is 835833176102.

201671338538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 181802462689 + 19868875849 = 426383^2 + 140957^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201671338492 and 201671338501.

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 7 ways as a sum of consecutive naturals, for example, 1796378 + ... + 1905338.

Almost surely, 2^201671338538 is an apocalyptic number.

201671338538 is a deficient number, since it is larger than the sum of its proper divisors (118639022686).

201671338538 is a wasteful number, since it uses less digits than its factorization.

201671338538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163417.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 201671338538 in words is "two hundred one billion, six hundred seventy-one million, three hundred thirty-eight thousand, five hundred thirty-eight".