61609330205 has 8 divisors (see below), whose sum is σ = 73939509504. Its totient is φ = 49281922000.

The previous prime is 61609330187. The next prime is 61609330243. The reversal of 61609330205 is 50203390616.

61609330205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61609330205 - 2¹⁶ = 61609264669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643541 + ... + 733050.

It is an arithmetic number, because the mean of its divisors is an integer number (9242438688).

Almost surely, 2^61609330205 is an apocalyptic number.

It is an amenable number.

61609330205 is a deficient number, since it is larger than the sum of its proper divisors (12330179299).

61609330205 is a wasteful number, since it uses less digits than its factorization.

61609330205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385547.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 61609330205 in words is "sixty-one billion, six hundred nine million, three hundred thirty thousand, two hundred five".