38221701128 has 60 divisors (see below), whose sum is σ = 77827908465. Its totient is φ = 17597653632.

The previous prime is 38221701083. The next prime is 38221701143. The reversal of 38221701128 is 82110712283.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 8 ways, for example, as 3201070084 + 35020631044 = 56578^2 + 187138^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=138242.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 93451388 + ... + 93451796.

Almost surely, 2^38221701128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38221701128

38221701128 is an abundant number, since it is smaller than the sum of its proper divisors (39606207337).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38221701128 is an frugal number, since it uses more digits than its factorization.

38221701128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 38221701128 in words is "thirty-eight billion, two hundred twenty-one million, seven hundred one thousand, one hundred twenty-eight".