6531363420 has 48 divisors (see below), whose sum is σ = 18383597568. Its totient is φ = 1732575040.

The previous prime is 6531363403. The next prime is 6531363451. The reversal of 6531363420 is 243631356.

It is a super-2 number, since 2×6531363420² = 85317416248228192800, which contains 22 as substring.

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, 273504 + ... + 296423.

It is an arithmetic number, because the mean of its divisors is an integer number (382991616).

Almost surely, 2^6531363420 is an apocalyptic number.

6531363420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6531363420 is an abundant number, since it is smaller than the sum of its proper divisors (11852234148).

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

6531363420 is a wasteful number, since it uses less digits than its factorization.

6531363420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570130 (or 570128 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 6531363420 is about 80816.8510893613. The cubic root of 6531363420 is about 1869.2524126190.

Adding to 6531363420 its reverse (243631356), we get a palindrome (6774994776).

The spelling of 6531363420 in words is "six billion, five hundred thirty-one million, three hundred sixty-three thousand, four hundred twenty".