438464367078331 has 16 divisors (see below), whose sum is σ = 517237291837440. Its totient is φ = 367174620734080.

The previous prime is 438464367078323. The next prime is 438464367078349. The reversal of 438464367078331 is 133870763464834.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 438464367078331 - 2³ = 438464367078323 is a prime.

It is a super-2 number, since 2×438464367078331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438464367078371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24943919251 + ... + 24943936828.

It is an arithmetic number, because the mean of its divisors is an integer number (32327330739840).

Almost surely, 2^{438464367078331} is an apocalyptic number.

438464367078331 is a deficient number, since it is larger than the sum of its proper divisors (78772924759109).

438464367078331 is a wasteful number, since it uses less digits than its factorization.

438464367078331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49887856154.

The product of its (nonzero) digits is 585252864, while the sum is 67.

The spelling of 438464367078331 in words is "four hundred thirty-eight trillion, four hundred sixty-four billion, three hundred sixty-seven million, seventy-eight thousand, three hundred thirty-one".