8117019648 has 264 divisors, whose sum is σ = 25107159168. Its totient is φ = 2516779008.

The previous prime is 8117019637. The next prime is 8117019653. The reversal of 8117019648 is 8469107118.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16136965 + ... + 16137467.

Almost surely, 2^8117019648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8117019648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12553579584).

8117019648 is an abundant number, since it is smaller than the sum of its proper divisors (16990139520).

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

8117019648 is a wasteful number, since it uses less digits than its factorization.

8117019648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 8117019648 is about 90094.5039833174. The cubic root of 8117019648 is about 2009.7044727761.

The spelling of 8117019648 in words is "eight billion, one hundred seventeen million, nineteen thousand, six hundred forty-eight".