438539720071 has 2 divisors, whose sum is σ = 438539720072. Its totient is φ = 438539720070.

The previous prime is 438539720051. The next prime is 438539720147. The reversal of 438539720071 is 170027935834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438539720071 - 2¹³ = 438539711879 is a prime.

It is a super-3 number, since 3×438539720071³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 438539719997 and 438539720024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438539720051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219269860035 + 219269860036.

It is an arithmetic number, because the mean of its divisors is an integer number (219269860036).

Almost surely, 2^438539720071 is an apocalyptic number.

438539720071 is a deficient number, since it is larger than the sum of its proper divisors (1).

438539720071 is an equidigital number, since it uses as much as digits as its factorization.

438539720071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 438539720071 in words is "four hundred thirty-eight billion, five hundred thirty-nine million, seven hundred twenty thousand, seventy-one".