6915800285856 has 576 divisors, whose sum is σ = 25611126912000. Its totient is φ = 1795351703040.

The previous prime is 6915800285839. The next prime is 6915800285881. The reversal of 6915800285856 is 6585820085196.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 6915800285793 and 6915800285802.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1405933765 + ... + 1405938683.

It is an arithmetic number, because the mean of its divisors is an integer number (44463762000).

Almost surely, 2^{6915800285856} is an apocalyptic number.

6915800285856 is a gapful number since it is divisible by the number (66) 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 6915800285856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12805563456000).

6915800285856 is an abundant number, since it is smaller than the sum of its proper divisors (18695326626144).

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

6915800285856 is a wasteful number, since it uses less digits than its factorization.

6915800285856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7982 (or 7961 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 63.

The spelling of 6915800285856 in words is "six trillion, nine hundred fifteen billion, eight hundred million, two hundred eighty-five thousand, eight hundred fifty-six".