6471221232 has 160 divisors (see below), whose sum is σ = 19815239680. Its totient is φ = 1780807680.

The previous prime is 6471221209. The next prime is 6471221257. The reversal of 6471221232 is 2321221746.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 6471221232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2383908 + ... + 2386620.

It is an arithmetic number, because the mean of its divisors is an integer number (123845248).

Almost surely, 2^6471221232 is an apocalyptic number.

6471221232 is a gapful number since it is divisible by the number (62) 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 6471221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9907619840).

6471221232 is an abundant number, since it is smaller than the sum of its proper divisors (13344018448).

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

6471221232 is a wasteful number, since it uses less digits than its factorization.

6471221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991 (or 2985 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 6471221232 is about 80443.9011485644. The cubic root of 6471221232 is about 1863.4972196002.

Adding to 6471221232 its reverse (2321221746), we get a palindrome (8792442978).

The spelling of 6471221232 in words is "six billion, four hundred seventy-one million, two hundred twenty-one thousand, two hundred thirty-two".