438471372534 has 128 divisors (see below), whose sum is σ = 971814412800. Its totient is φ = 131069352960.

The previous prime is 438471372487. The next prime is 438471372659. The reversal of 438471372534 is 435273174834.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 103679932 + ... + 103684160.

It is an arithmetic number, because the mean of its divisors is an integer number (7592300100).

Almost surely, 2^438471372534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438471372534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485907206400).

438471372534 is an abundant number, since it is smaller than the sum of its proper divisors (533343040266).

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

438471372534 is a wasteful number, since it uses less digits than its factorization.

438471372534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4590.

The product of its digits is 6773760, while the sum is 51.

The spelling of 438471372534 in words is "four hundred thirty-eight billion, four hundred seventy-one million, three hundred seventy-two thousand, five hundred thirty-four".