8101667720 has 32 divisors (see below), whose sum is σ = 18816779520. Its totient is φ = 3136128960.

The previous prime is 8101667687. The next prime is 8101667731. The reversal of 8101667720 is 277661018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265562 + ... + 3268041.

It is an arithmetic number, because the mean of its divisors is an integer number (588024360).

Almost surely, 2^8101667720 is an apocalyptic number.

It is an amenable number.

8101667720 is an abundant number, since it is smaller than the sum of its proper divisors (10715111800).

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

8101667720 is a wasteful number, since it uses less digits than its factorization.

8101667720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533645 (or 6533641 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 8101667720 is about 90009.2646342586. The cubic root of 8101667720 is about 2008.4366712474.

The spelling of 8101667720 in words is "eight billion, one hundred one million, six hundred sixty-seven thousand, seven hundred twenty".