64441060985 has 16 divisors (see below), whose sum is σ = 89369308800. Its totient is φ = 43691657856.

The previous prime is 64441060969. The next prime is 64441061011. The reversal of 64441060985 is 58906014446.

It is a happy number.

It is not a de Polignac number, because 64441060985 - 2⁴ = 64441060969 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10340555 + ... + 10346784.

It is an arithmetic number, because the mean of its divisors is an integer number (5585581800).

Almost surely, 2^64441060985 is an apocalyptic number.

It is an amenable number.

64441060985 is a deficient number, since it is larger than the sum of its proper divisors (24928247815).

64441060985 is a wasteful number, since it uses less digits than its factorization.

64441060985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20687440.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 64441060985 in words is "sixty-four billion, four hundred forty-one million, sixty thousand, nine hundred eighty-five".