438471887945 has 16 divisors (see below), whose sum is σ = 647589250560. Its totient is φ = 277538249664.

The previous prime is 438471887869. The next prime is 438471887947. The reversal of 438471887945 is 549788174834.

It is a de Polignac number, because none of the positive numbers 2^k-438471887945 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438471887947) 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, 481836785 + ... + 481837694.

It is an arithmetic number, because the mean of its divisors is an integer number (40474328160).

Almost surely, 2^438471887945 is an apocalyptic number.

It is an amenable number.

438471887945 is a deficient number, since it is larger than the sum of its proper divisors (209117362615).

438471887945 is a wasteful number, since it uses less digits than its factorization.

438471887945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963674504.

The product of its digits is 216760320, while the sum is 68.

The spelling of 438471887945 in words is "four hundred thirty-eight billion, four hundred seventy-one million, eight hundred eighty-seven thousand, nine hundred forty-five".