6865042380 has 192 divisors, whose sum is σ = 23871160320. Its totient is φ = 1438560000.

The previous prime is 6865042363. The next prime is 6865042423. The reversal of 6865042380 is 832405686.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233505 + ... + 261255.

It is an arithmetic number, because the mean of its divisors is an integer number (124328960).

Almost surely, 2^6865042380 is an apocalyptic number.

6865042380 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 6865042380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11935580160).

6865042380 is an abundant number, since it is smaller than the sum of its proper divisors (17006117940).

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

6865042380 is a wasteful number, since it uses less digits than its factorization.

6865042380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27820 (or 27818 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 6865042380 is about 82855.5512925960. The cubic root of 6865042380 is about 1900.5577660701.

The spelling of 6865042380 in words is "six billion, eight hundred sixty-five million, forty-two thousand, three hundred eighty".