6522378240 has 384 divisors, whose sum is σ = 24373440000. Its totient is φ = 1488420864.

The previous prime is 6522378221. The next prime is 6522378251. The reversal of 6522378240 is 428732256.

It is a tau number, because it is divible by the number of its divisors (384).

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, 10536651 + ... + 10537269.

It is an arithmetic number, because the mean of its divisors is an integer number (63472500).

Almost surely, 2^6522378240 is an apocalyptic number.

6522378240 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 6522378240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12186720000).

6522378240 is an abundant number, since it is smaller than the sum of its proper divisors (17851061760).

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

6522378240 is an equidigital number, since it uses as much as digits as its factorization.

6522378240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 6522378240 is about 80761.2421895553. The cubic root of 6522378240 is about 1868.3948439881.

The spelling of 6522378240 in words is "six billion, five hundred twenty-two million, three hundred seventy-eight thousand, two hundred forty".