6863186903040 has 960 divisors, whose sum is σ = 26993171493120. Its totient is φ = 1643485593600.

The previous prime is 6863186902969. The next prime is 6863186903047. The reversal of 6863186903040 is 403096813686.

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-2 number, since 2×6863186903040² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6863186903047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1063891815 + ... + 1063898265.

It is an arithmetic number, because the mean of its divisors is an integer number (28117886972).

Almost surely, 2^{6863186903040} is an apocalyptic number.

6863186903040 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 6863186903040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13496585746560).

6863186903040 is an abundant number, since it is smaller than the sum of its proper divisors (20129984590080).

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

6863186903040 is a wasteful number, since it uses less digits than its factorization.

6863186903040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543 (or 6511 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 6863186903040 in words is "six trillion, eight hundred sixty-three billion, one hundred eighty-six million, nine hundred three thousand, forty".