8449921858560 has 704 divisors, whose sum is σ = 33606903708672. Its totient is φ = 1764432543744.

The previous prime is 8449921858489. The next prime is 8449921858579. The reversal of 8449921858560 is 658581299448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 135551559 + ... + 135613881.

Almost surely, 2^{8449921858560} is an apocalyptic number.

8449921858560 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 8449921858560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16803451854336).

8449921858560 is an abundant number, since it is smaller than the sum of its proper divisors (25156981850112).

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

8449921858560 is a wasteful number, since it uses less digits than its factorization.

8449921858560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62468 (or 62450 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 69.

The spelling of 8449921858560 in words is "eight trillion, four hundred forty-nine billion, nine hundred twenty-one million, eight hundred fifty-eight thousand, five hundred sixty".