438431287064 has 64 divisors (see below), whose sum is σ = 851128961280. Its totient is φ = 211727520000.

The previous prime is 438431287039. The next prime is 438431287067. The reversal of 438431287064 is 460782134834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438431287067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146093564 + ... + 146096564.

It is an arithmetic number, because the mean of its divisors is an integer number (13298890020).

Almost surely, 2^438431287064 is an apocalyptic number.

It is an amenable number.

438431287064 is a deficient number, since it is larger than the sum of its proper divisors (412697674216).

438431287064 is an equidigital number, since it uses as much as digits as its factorization.

438431287064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713 (or 3647 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 438431287064 in words is "four hundred thirty-eight billion, four hundred thirty-one million, two hundred eighty-seven thousand, sixty-four".