65488240985 has 8 divisors (see below), whose sum is σ = 79396053576. Its totient is φ = 51850483200.

The previous prime is 65488240969. The next prime is 65488240997. The reversal of 65488240985 is 58904288456.

It can be written as a sum of positive squares in 4 ways, for example, as 12095820361 + 53392420624 = 109981^2 + 231068^2 .

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

It is not a de Polignac number, because 65488240985 - 2⁴ = 65488240969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67513166 + ... + 67514135.

It is an arithmetic number, because the mean of its divisors is an integer number (9924506697).

Almost surely, 2^65488240985 is an apocalyptic number.

It is an amenable number.

65488240985 is a deficient number, since it is larger than the sum of its proper divisors (13907812591).

65488240985 is a wasteful number, since it uses less digits than its factorization.

65488240985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135027403.

The product of its (nonzero) digits is 22118400, while the sum is 59.

The spelling of 65488240985 in words is "sixty-five billion, four hundred eighty-eight million, two hundred forty thousand, nine hundred eighty-five".