8061661360 has 20 divisors (see below), whose sum is σ = 18743362848. Its totient is φ = 3224664512.

The previous prime is 8061661337. The next prime is 8061661379. The reversal of 8061661360 is 631661608.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50385304 + ... + 50385463.

Almost surely, 2^8061661360 is an apocalyptic number.

8061661360 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8061661360 is an abundant number, since it is smaller than the sum of its proper divisors (10681701488).

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

8061661360 is a wasteful number, since it uses less digits than its factorization.

8061661360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100770780 (or 100770774 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 8061661360 is about 89786.7549252115. The cubic root of 8061661360 is about 2005.1253010914.

The spelling of 8061661360 in words is "eight billion, sixty-one million, six hundred sixty-one thousand, three hundred sixty".