61050605065 has 4 divisors (see below), whose sum is σ = 73260726084. Its totient is φ = 48840484048.

The previous prime is 61050605053. The next prime is 61050605069. The reversal of 61050605065 is 56050605016.

61050605065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44367524496 + 16683080569 = 210636^2 + 129163^2 .

It is a cyclic number.

It is not a de Polignac number, because 61050605065 - 2¹¹ = 61050603017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61050605065.

It is not an unprimeable number, because it can be changed into a prime (61050605069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6105060502 + ... + 6105060511.

It is an arithmetic number, because the mean of its divisors is an integer number (18315181521).

Almost surely, 2^61050605065 is an apocalyptic number.

It is an amenable number.

61050605065 is a deficient number, since it is larger than the sum of its proper divisors (12210121019).

61050605065 is a wasteful number, since it uses less digits than its factorization.

61050605065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12210121018.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 61050605065 in words is "sixty-one billion, fifty million, six hundred five thousand, sixty-five".