61615105160 has 128 divisors (see below), whose sum is σ = 161176780800. Its totient is φ = 20762576640.

The previous prime is 61615105159. The next prime is 61615105199. The reversal of 61615105160 is 6150151616.

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, 4926515 + ... + 4939005.

It is an arithmetic number, because the mean of its divisors is an integer number (1259193600).

Almost surely, 2^61615105160 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 61615105160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80588390400).

61615105160 is an abundant number, since it is smaller than the sum of its proper divisors (99561675640).

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

61615105160 is a wasteful number, since it uses less digits than its factorization.

61615105160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811 (or 12807 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 61615105160 its reverse (6150151616), we get a palindrome (67765256776).

The spelling of 61615105160 in words is "sixty-one billion, six hundred fifteen million, one hundred five thousand, one hundred sixty".