6387353440 has 96 divisors (see below), whose sum is σ = 16304482656. Its totient is φ = 2350632960.

The previous prime is 6387353419. The next prime is 6387353447. The reversal of 6387353440 is 443537836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6387353447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646135 + ... + 655945.

It is an arithmetic number, because the mean of its divisors is an integer number (169838361).

Almost surely, 2^6387353440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6387353440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8152241328).

6387353440 is an abundant number, since it is smaller than the sum of its proper divisors (9917129216).

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

6387353440 is a wasteful number, since it uses less digits than its factorization.

6387353440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152 (or 10144 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 43.

The square root of 6387353440 is about 79920.9199146256. The cubic root of 6387353440 is about 1855.4118076432.

The spelling of 6387353440 in words is "six billion, three hundred eighty-seven million, three hundred fifty-three thousand, four hundred forty".