471644444964 has 144 divisors (see below), whose sum is σ = 1404633496896. Its totient is φ = 121796640000.

The previous prime is 471644444959. The next prime is 471644445023. The reversal of 471644444964 is 469444446174.

It is a super-2 number, since 2×471644444964² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 908214 + ... + 1329714.

It is an arithmetic number, because the mean of its divisors is an integer number (9754399284).

Almost surely, 2^471644444964 is an apocalyptic number.

471644444964 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 471644444964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (702316748448).

471644444964 is an abundant number, since it is smaller than the sum of its proper divisors (932989051932).

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

471644444964 is a wasteful number, since it uses less digits than its factorization.

471644444964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421706 (or 421697 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 57.

The spelling of 471644444964 in words is "four hundred seventy-one billion, six hundred forty-four million, four hundred forty-four thousand, nine hundred sixty-four".