438085240385123 has 4 divisors (see below), whose sum is σ = 453191627984640. Its totient is φ = 422978852785608.

The previous prime is 438085240385083. The next prime is 438085240385137. The reversal of 438085240385123 is 321583042580834.

It is a happy number.

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 438085240385123 - 2¹² = 438085240381027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438085240385623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7553193799715 + ... + 7553193799772.

It is an arithmetic number, because the mean of its divisors is an integer number (113297906996160).

Almost surely, 2^{438085240385123} is an apocalyptic number.

438085240385123 is a deficient number, since it is larger than the sum of its proper divisors (15106387599517).

438085240385123 is a wasteful number, since it uses less digits than its factorization.

438085240385123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15106387599516.

The product of its (nonzero) digits is 22118400, while the sum is 56.

The spelling of 438085240385123 in words is "four hundred thirty-eight trillion, eighty-five billion, two hundred forty million, three hundred eighty-five thousand, one hundred twenty-three".