438085240385121 has 20 divisors (see below), whose sum is σ = 747912720799552. Its totient is φ = 250334423076888.

The previous prime is 438085240385083. The next prime is 438085240385137. The reversal of 438085240385121 is 121583042580834.

It is a happy number.

438085240385121 is a `hidden beast` number, since 4 + 3 + 8 + 0 + 8 + 5 + 240 + 385 + 12 + 1 = 666.

It is not a de Polignac number, because 438085240385121 - 2¹⁸ = 438085240122977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438085240385021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 386318553565 + ... + 386318554698.

Almost surely, 2^{438085240385121} is an apocalyptic number.

It is an amenable number.

438085240385121 is a deficient number, since it is larger than the sum of its proper divisors (309827480414431).

438085240385121 is an equidigital number, since it uses as much as digits as its factorization.

438085240385121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772637108282 (or 772637108273 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 438085240385121 in words is "four hundred thirty-eight trillion, eighty-five billion, two hundred forty million, three hundred eighty-five thousand, one hundred twenty-one".