38128247407 has 4 divisors (see below), whose sum is σ = 38650552240. Its totient is φ = 37605942576.

The previous prime is 38128247393. The next prime is 38128247459. The reversal of 38128247407 is 70474282183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38128247407 - 2⁷ = 38128247279 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 (38128242407) 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, 261152307 + ... + 261152452.

It is an arithmetic number, because the mean of its divisors is an integer number (9662638060).

Almost surely, 2^38128247407 is an apocalyptic number.

38128247407 is a deficient number, since it is larger than the sum of its proper divisors (522304833).

38128247407 is an equidigital number, since it uses as much as digits as its factorization.

38128247407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522304832.

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 38128247407 in words is "thirty-eight billion, one hundred twenty-eight million, two hundred forty-seven thousand, four hundred seven".