438447045650 has 12 divisors (see below), whose sum is σ = 815511505002. Its totient is φ = 175378818240.

The previous prime is 438447045623. The next prime is 438447045653. The reversal of 438447045650 is 56540744834.

It can be written as a sum of positive squares in 3 ways, for example, as 403833559441 + 34613486209 = 635479^2 + 186047^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 8768940913 = 438447045650 / (4 + 3 + 8 + 4 + 4 + 7 + 0 + 4 + 5 + 6 + 5 + 0).

It is not an unprimeable number, because it can be changed into a prime (438447045653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4384470407 + ... + 4384470506.

Almost surely, 2^438447045650 is an apocalyptic number.

438447045650 is a deficient number, since it is larger than the sum of its proper divisors (377064459352).

438447045650 is a wasteful number, since it uses less digits than its factorization.

438447045650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768940925 (or 8768940920 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 50.

The spelling of 438447045650 in words is "four hundred thirty-eight billion, four hundred forty-seven million, forty-five thousand, six hundred fifty".