38775318728 has 16 divisors (see below), whose sum is σ = 73935990000. Its totient is φ = 19059054736.

The previous prime is 38775318709. The next prime is 38775318737. The reversal of 38775318728 is 82781357783.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 41075078 + ... + 41076021.

It is an arithmetic number, because the mean of its divisors is an integer number (4620999375).

Almost surely, 2^38775318728 is an apocalyptic number.

It is an amenable number.

38775318728 is a deficient number, since it is larger than the sum of its proper divisors (35160671272).

38775318728 is a wasteful number, since it uses less digits than its factorization.

38775318728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82151164 (or 82151160 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 59.

The spelling of 38775318728 in words is "thirty-eight billion, seven hundred seventy-five million, three hundred eighteen thousand, seven hundred twenty-eight".