438449061320 has 16 divisors (see below), whose sum is σ = 986510388060. Its totient is φ = 175379624512.

The previous prime is 438449061319. The next prime is 438449061329. The reversal of 438449061320 is 23160944834.

It can be written as a sum of positive squares in 2 ways, for example, as 414681905764 + 23767155556 = 643958^2 + 154166^2 .

It is not an unprimeable number, because it can be changed into a prime (438449061329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5480613227 + ... + 5480613306.

Almost surely, 2^438449061320 is an apocalyptic number.

438449061320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

438449061320 is an abundant number, since it is smaller than the sum of its proper divisors (548061326740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438449061320 is a wasteful number, since it uses less digits than its factorization.

438449061320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10961226544 (or 10961226540 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 438449061320 in words is "four hundred thirty-eight billion, four hundred forty-nine million, sixty-one thousand, three hundred twenty".