6453631220 has 48 divisors (see below), whose sum is σ = 13822704000. Its totient is φ = 2530266240.

The previous prime is 6453631193. The next prime is 6453631237. The reversal of 6453631220 is 221363546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403985 + ... + 419655.

It is an arithmetic number, because the mean of its divisors is an integer number (287973000).

Almost surely, 2^6453631220 is an apocalyptic number.

It is an amenable number.

6453631220 is an abundant number, since it is smaller than the sum of its proper divisors (7369072780).

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

6453631220 is a wasteful number, since it uses less digits than its factorization.

6453631220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16088 (or 16086 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 6453631220 is about 80334.4958283800. The cubic root of 6453631220 is about 1861.8072406400.

Adding to 6453631220 its reverse (221363546), we get a palindrome (6674994766).

The spelling of 6453631220 in words is "six billion, four hundred fifty-three million, six hundred thirty-one thousand, two hundred twenty".