8666476640640 has 2048 divisors, whose sum is σ = 38933540352000. Its totient is φ = 1773117112320.

The previous prime is 8666476640617. The next prime is 8666476640659. The reversal of 8666476640640 is 460466746668.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 14764014427 + ... + 14764015013.

It is an arithmetic number, because the mean of its divisors is an integer number (19010517750).

Almost surely, 2^{8666476640640} is an apocalyptic number.

8666476640640 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 8666476640640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19466770176000).

8666476640640 is an abundant number, since it is smaller than the sum of its proper divisors (30267063711360).

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

8666476640640 is a wasteful number, since it uses less digits than its factorization.

8666476640640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 63.

The spelling of 8666476640640 in words is "eight trillion, six hundred sixty-six billion, four hundred seventy-six million, six hundred forty thousand, six hundred forty".