61030115072 has 144 divisors (see below), whose sum is σ = 130883860800. Its totient is φ = 28331212800.

The previous prime is 61030115033. The next prime is 61030115077. The reversal of 61030115072 is 27051103016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61030115077) 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 15 ways as a sum of consecutive naturals, for example, 58178804 + ... + 58179852.

It is an arithmetic number, because the mean of its divisors is an integer number (908915700).

Almost surely, 2^61030115072 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 61030115072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65441930400).

61030115072 is an abundant number, since it is smaller than the sum of its proper divisors (69853745728).

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

61030115072 is a wasteful number, since it uses less digits than its factorization.

61030115072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

Adding to 61030115072 its reverse (27051103016), we get a palindrome (88081218088).

The spelling of 61030115072 in words is "sixty-one billion, thirty million, one hundred fifteen thousand, seventy-two".