8649655522820 has 48 divisors (see below), whose sum is σ = 19561834205760. Its totient is φ = 3193669074816.

The previous prime is 8649655522801. The next prime is 8649655522831. The reversal of 8649655522820 is 282255569468.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19220099 + ... + 19664981.

It is an arithmetic number, because the mean of its divisors is an integer number (407538212620).

Almost surely, 2^{8649655522820} is an apocalyptic number.

It is an amenable number.

8649655522820 is an abundant number, since it is smaller than the sum of its proper divisors (10912178682940).

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

8649655522820 is a wasteful number, since it uses less digits than its factorization.

8649655522820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519684 (or 519682 counting only the distinct ones).

The product of its (nonzero) digits is 82944000, while the sum is 62.

The spelling of 8649655522820 in words is "eight trillion, six hundred forty-nine billion, six hundred fifty-five million, five hundred twenty-two thousand, eight hundred twenty".