61065050065 has 8 divisors (see below), whose sum is σ = 75065330088. Its totient is φ = 47660526720.

The previous prime is 61065050029. The next prime is 61065050069. The reversal of 61065050065 is 56005056016.

It can be written as a sum of positive squares in 4 ways, for example, as 215296 + 61064834769 = 464^2 + 247113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-61065050065 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 61065050065.

It is not an unprimeable number, because it can be changed into a prime (61065050069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148938942 + ... + 148939351.

It is an arithmetic number, because the mean of its divisors is an integer number (9383166261).

Almost surely, 2^61065050065 is an apocalyptic number.

It is an amenable number.

61065050065 is a deficient number, since it is larger than the sum of its proper divisors (14000280023).

61065050065 is a wasteful number, since it uses less digits than its factorization.

61065050065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297878339.

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

The spelling of 61065050065 in words is "sixty-one billion, sixty-five million, fifty thousand, sixty-five".