6391131360 has 192 divisors, whose sum is σ = 21390868800. Its totient is φ = 1600929792.

The previous prime is 6391131359. The next prime is 6391131367. The reversal of 6391131360 is 631311936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6391131367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 508836 + ... + 521244.

It is an arithmetic number, because the mean of its divisors is an integer number (111410775).

Almost surely, 2^6391131360 is an apocalyptic number.

6391131360 is a gapful number since it is divisible by the number (60) 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 6391131360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10695434400).

6391131360 is an abundant number, since it is smaller than the sum of its proper divisors (14999737440).

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

6391131360 is a wasteful number, since it uses less digits than its factorization.

6391131360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12493 (or 12485 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 6391131360 is about 79944.5517843461. The cubic root of 6391131360 is about 1855.7775415845. Note that the first 3 decimals are identical.

The spelling of 6391131360 in words is "six billion, three hundred ninety-one million, one hundred thirty-one thousand, three hundred sixty".