61641536324245 has 16 divisors (see below), whose sum is σ = 74196124591680. Its totient is φ = 49162602426624.

The previous prime is 61641536324243. The next prime is 61641536324287. The reversal of 61641536324245 is 54242363514616.

It is a cyclic number.

It is not a de Polignac number, because 61641536324245 - 2¹ = 61641536324243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61641536324192 and 61641536324201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61641536324243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12040932 + ... + 16378861.

It is an arithmetic number, because the mean of its divisors is an integer number (4637257786980).

Almost surely, 2^{61641536324245} is an apocalyptic number.

It is an amenable number.

61641536324245 is a deficient number, since it is larger than the sum of its proper divisors (12554588267435).

61641536324245 is a wasteful number, since it uses less digits than its factorization.

61641536324245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28421124.

The product of its digits is 12441600, while the sum is 52.

The spelling of 61641536324245 in words is "sixty-one trillion, six hundred forty-one billion, five hundred thirty-six million, three hundred twenty-four thousand, two hundred forty-five".