61165516608 has 112 divisors (see below), whose sum is σ = 205503231360. Its totient is φ = 17475858432.

The previous prime is 61165516501. The next prime is 61165516619. The reversal of 61165516608 is 80661556116.

61165516608 is a `hidden beast` number, since 6 + 11 + 65 + 516 + 60 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2516241 + ... + 2540432.

It is an arithmetic number, because the mean of its divisors is an integer number (1834850280).

Almost surely, 2^61165516608 is an apocalyptic number.

It is an amenable number.

61165516608 is an abundant number, since it is smaller than the sum of its proper divisors (144337714752).

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

61165516608 is a wasteful number, since it uses less digits than its factorization.

61165516608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5056701 (or 5056685 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 61165516608 in words is "sixty-one billion, one hundred sixty-five million, five hundred sixteen thousand, six hundred eight".