438438342287502 has 48 divisors (see below), whose sum is σ = 1023201680117760. Its totient is φ = 135234347922576.

The previous prime is 438438342287497. The next prime is 438438342287509. The reversal of 438438342287502 is 205782243834834.

438438342287502 is a `hidden beast` number, since 4 + 3 + 8 + 4 + 3 + 8 + 3 + 42 + 2 + 87 + 502 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 438438342287502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438438342287509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14906769678 + ... + 14906799089.

It is an arithmetic number, because the mean of its divisors is an integer number (21316701669120).

Almost surely, 2^{438438342287502} is an apocalyptic number.

438438342287502 is an abundant number, since it is smaller than the sum of its proper divisors (584763337830258).

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

438438342287502 is a wasteful number, since it uses less digits than its factorization.

438438342287502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29813568837 (or 29813568834 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 63.

The spelling of 438438342287502 in words is "four hundred thirty-eight trillion, four hundred thirty-eight billion, three hundred forty-two million, two hundred eighty-seven thousand, five hundred two".