61036685568 has 288 divisors, whose sum is σ = 187251657600. Its totient is φ = 19841863680.

The previous prime is 61036685441. The next prime is 61036685599. The reversal of 61036685568 is 86558663016.

61036685568 is a `hidden beast` number, since 6 + 10 + 3 + 6 + 68 + 5 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22953423 + ... + 22956081.

Almost surely, 2^61036685568 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 61036685568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93625828800).

61036685568 is an abundant number, since it is smaller than the sum of its proper divisors (126214972032).

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

61036685568 is an frugal number, since it uses more digits than its factorization.

61036685568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737 (or 2705 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 61036685568 in words is "sixty-one billion, thirty-six million, six hundred eighty-five thousand, five hundred sixty-eight".