61117020136000 has 112 divisors (see below), whose sum is σ = 151577919043200. Its totient is φ = 24411012595200.

The previous prime is 61117020135917. The next prime is 61117020136001. The reversal of 61117020136000 is 63102071116.

It is a self number, because there is not a number n which added to its sum of digits gives 61117020136000.

It is not an unprimeable number, because it can be changed into a prime (61117020136001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128700 + ... + 11056699.

Almost surely, 2^{61117020136000} 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 61117020136000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75788959521600).

61117020136000 is an abundant number, since it is smaller than the sum of its proper divisors (90460898907200).

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

61117020136000 is a wasteful number, since it uses less digits than its factorization.

61117020136000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11186109 (or 11186089 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The spelling of 61117020136000 in words is "sixty-one trillion, one hundred seventeen billion, twenty million, one hundred thirty-six thousand".