61550230016 has 80 divisors (see below), whose sum is σ = 134662318560. Its totient is φ = 27872686080.

The previous prime is 61550230003. The next prime is 61550230019. The reversal of 61550230016 is 61003205516.

It is not an unprimeable number, because it can be changed into a prime (61550230019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1494695 + ... + 1535321.

It is an arithmetic number, because the mean of its divisors is an integer number (1683278982).

Almost surely, 2^61550230016 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 61550230016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67331159280).

61550230016 is an abundant number, since it is smaller than the sum of its proper divisors (73112088544).

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

61550230016 is a wasteful number, since it uses less digits than its factorization.

61550230016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40925 (or 40909 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 61550230016 in words is "sixty-one billion, five hundred fifty million, two hundred thirty thousand, sixteen".