8268487647840 has 576 divisors, whose sum is σ = 32832258076800. Its totient is φ = 1855872663552.

The previous prime is 8268487647839. The next prime is 8268487647941. The reversal of 8268487647840 is 487467848628.

It is a happy number.

8268487647840 is a `hidden beast` number, since 8 + 2 + 6 + 8 + 48 + 76 + 478 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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, 168482826 + ... + 168531894.

It is an arithmetic number, because the mean of its divisors is an integer number (57000448050).

Almost surely, 2^{8268487647840} is an apocalyptic number.

8268487647840 is a gapful number since it is divisible by the number (80) 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 8268487647840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16416129038400).

8268487647840 is an abundant number, since it is smaller than the sum of its proper divisors (24563770428960).

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

8268487647840 is a wasteful number, since it uses less digits than its factorization.

8268487647840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49399 (or 49388 counting only the distinct ones).

The product of its (nonzero) digits is 924844032, while the sum is 72.

The spelling of 8268487647840 in words is "eight trillion, two hundred sixty-eight billion, four hundred eighty-seven million, six hundred forty-seven thousand, eight hundred forty".