61550560061605 has 8 divisors (see below), whose sum is σ = 73860777518112. Its totient is φ = 49240377753168.

The previous prime is 61550560061569. The next prime is 61550560061609. The reversal of 61550560061605 is 50616006505516.

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

It is a cyclic number.

It is not a de Polignac number, because 61550560061605 - 2¹¹ = 61550560059557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61550560061609) 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, 4767247 + ... + 12075916.

It is an arithmetic number, because the mean of its divisors is an integer number (9232597189764).

Almost surely, 2^{61550560061605} is an apocalyptic number.

It is an amenable number.

61550560061605 is a deficient number, since it is larger than the sum of its proper divisors (12310217456507).

61550560061605 is a wasteful number, since it uses less digits than its factorization.

61550560061605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17574035.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 61550560061605 in words is "sixty-one trillion, five hundred fifty billion, five hundred sixty million, sixty-one thousand, six hundred five".