60444078661 has 4 divisors (see below), whose sum is σ = 61918324524. Its totient is φ = 58969832800.

The previous prime is 60444078647. The next prime is 60444078671. The reversal of 60444078661 is 16687044406.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7831188036 + 52612890625 = 88494^2 + 229375^2 .

It is a cyclic number.

It is not a de Polignac number, because 60444078661 - 2⁷ = 60444078533 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 (60444078671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737122870 + ... + 737122951.

It is an arithmetic number, because the mean of its divisors is an integer number (15479581131).

Almost surely, 2^60444078661 is an apocalyptic number.

It is an amenable number.

60444078661 is a deficient number, since it is larger than the sum of its proper divisors (1474245863).

60444078661 is a wasteful number, since it uses less digits than its factorization.

60444078661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474245862.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 60444078661 in words is "sixty billion, four hundred forty-four million, seventy-eight thousand, six hundred sixty-one".