38123621528 has 8 divisors (see below), whose sum is σ = 71481790380. Its totient is φ = 19061810760.

The previous prime is 38123621527. The next prime is 38123621537. The reversal of 38123621528 is 82512632183.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38123621527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2382726338 + ... + 2382726353.

Almost surely, 2^38123621528 is an apocalyptic number.

It is an amenable number.

38123621528 is a deficient number, since it is larger than the sum of its proper divisors (33358168852).

38123621528 is a wasteful number, since it uses less digits than its factorization.

38123621528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765452697 (or 4765452693 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The spelling of 38123621528 in words is "thirty-eight billion, one hundred twenty-three million, six hundred twenty-one thousand, five hundred twenty-eight".