61210650515072 has 32 divisors (see below), whose sum is σ = 123200238134820. Its totient is φ = 30289806434304.

The previous prime is 61210650515071. The next prime is 61210650515087. The reversal of 61210650515072 is 27051505601216.

61210650515072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55724075100736 + 5486575414336 = 7464856^2 + 2342344^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (61210650515071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2464978343 + ... + 2465003174.

Almost surely, 2^{61210650515072} is an apocalyptic number.

It is an amenable number.

61210650515072 is an abundant number, since it is smaller than the sum of its proper divisors (61989587619748).

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

61210650515072 is an equidigital number, since it uses as much as digits as its factorization.

61210650515072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929981628 (or 4929981616 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 61210650515072 in words is "sixty-one trillion, two hundred ten billion, six hundred fifty million, five hundred fifteen thousand, seventy-two".