438494756145 has 64 divisors (see below), whose sum is σ = 757448029440. Its totient is φ = 215791566848.

The previous prime is 438494756143. The next prime is 438494756171. The reversal of 438494756145 is 541657494834.

It is a cyclic number.

It is not a de Polignac number, because 438494756145 - 2¹ = 438494756143 is a prime.

It is a super-2 number, since 2×438494756145² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (438494756143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19031122 + ... + 19054148.

It is an arithmetic number, because the mean of its divisors is an integer number (11835125460).

Almost surely, 2^438494756145 is an apocalyptic number.

It is an amenable number.

438494756145 is a deficient number, since it is larger than the sum of its proper divisors (318953273295).

438494756145 is a wasteful number, since it uses less digits than its factorization.

438494756145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24514.

The product of its digits is 58060800, while the sum is 60.

The spelling of 438494756145 in words is "four hundred thirty-eight billion, four hundred ninety-four million, seven hundred fifty-six thousand, one hundred forty-five".