38445068447 has 4 divisors (see below), whose sum is σ = 38445480696. Its totient is φ = 38444656200.

The previous prime is 38445068401. The next prime is 38445068461. The reversal of 38445068447 is 74486054483.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74486054483 = 19 ⋅3920318657.

It is a cyclic number.

It is not a de Polignac number, because 38445068447 - 2⁶ = 38445068383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38445068147) by changing a digit.

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, 7697 + ... + 277397.

It is an arithmetic number, because the mean of its divisors is an integer number (9611370174).

Almost surely, 2^38445068447 is an apocalyptic number.

38445068447 is a deficient number, since it is larger than the sum of its proper divisors (412249).

38445068447 is a wasteful number, since it uses less digits than its factorization.

38445068447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412248.

The product of its (nonzero) digits is 10321920, while the sum is 53.

The spelling of 38445068447 in words is "thirty-eight billion, four hundred forty-five million, sixty-eight thousand, four hundred forty-seven".