61441365145 has 8 divisors (see below), whose sum is σ = 73992022920. Its totient is φ = 48978168960.

The previous prime is 61441365143. The next prime is 61441365199. The reversal of 61441365145 is 54156314416.

It can be written as a sum of positive squares in 4 ways, for example, as 4665436416 + 56775928729 = 68304^2 + 238277^2 .

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

It is not a de Polignac number, because 61441365145 - 2¹ = 61441365143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61441365098 and 61441365107.

It is not an unprimeable number, because it can be changed into a prime (61441365143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21863850 + ... + 21866659.

It is an arithmetic number, because the mean of its divisors is an integer number (9249002865).

Almost surely, 2^61441365145 is an apocalyptic number.

It is an amenable number.

61441365145 is a deficient number, since it is larger than the sum of its proper divisors (12550657775).

61441365145 is a wasteful number, since it uses less digits than its factorization.

61441365145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43730795.

The product of its digits is 172800, while the sum is 40.

The spelling of 61441365145 in words is "sixty-one billion, four hundred forty-one million, three hundred sixty-five thousand, one hundred forty-five".