38121570028 has 12 divisors (see below), whose sum is σ = 67028923192. Its totient is φ = 18970449120.

The previous prime is 38121570023. The next prime is 38121570043. The reversal of 38121570028 is 82007512183.

It is not an unprimeable number, because it can be changed into a prime (38121570023) by changing a digit.

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, 22583025 + ... + 22584712.

Almost surely, 2^38121570028 is an apocalyptic number.

It is an amenable number.

38121570028 is a deficient number, since it is larger than the sum of its proper divisors (28907353164).

38121570028 is a wasteful number, since it uses less digits than its factorization.

38121570028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45167952 (or 45167950 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 38121570028 in words is "thirty-eight billion, one hundred twenty-one million, five hundred seventy thousand, twenty-eight".