38155545872 has 20 divisors (see below), whose sum is σ = 75138279756. Its totient is φ = 18765022080.

The previous prime is 38155545851. The next prime is 38155545889. The reversal of 38155545872 is 27854555183.

It can be written as a sum of positive squares in 2 ways, for example, as 11186023696 + 26969522176 = 105764^2 + 164224^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19545923 + ... + 19547874.

Almost surely, 2^38155545872 is an apocalyptic number.

It is an amenable number.

38155545872 is a deficient number, since it is larger than the sum of its proper divisors (36982733884).

38155545872 is a wasteful number, since it uses less digits than its factorization.

38155545872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39093866 (or 39093860 counting only the distinct ones).

The product of its digits is 6720000, while the sum is 53.

The spelling of 38155545872 in words is "thirty-eight billion, one hundred fifty-five million, five hundred forty-five thousand, eight hundred seventy-two".