438085374522161 has 8 divisors (see below), whose sum is σ = 447167134756224. Its totient is φ = 429033836453040.

The previous prime is 438085374522149. The next prime is 438085374522239. The reversal of 438085374522161 is 161225473580834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438085374522161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 438085374522161.

It is not an unprimeable number, because it can be changed into a prime (438085374522661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7555511945 + ... + 7555569926.

It is an arithmetic number, because the mean of its divisors is an integer number (55895891844528).

Almost surely, 2^{438085374522161} is an apocalyptic number.

It is an amenable number.

438085374522161 is a deficient number, since it is larger than the sum of its proper divisors (9081760234063).

438085374522161 is a wasteful number, since it uses less digits than its factorization.

438085374522161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15111082471.

The product of its (nonzero) digits is 38707200, while the sum is 59.

The spelling of 438085374522161 in words is "four hundred thirty-eight trillion, eighty-five billion, three hundred seventy-four million, five hundred twenty-two thousand, one hundred sixty-one".