650421986065 has 8 divisors (see below), whose sum is σ = 780620151168. Its totient is φ = 520261743600.

The previous prime is 650421986051. The next prime is 650421986083. The reversal of 650421986065 is 560689124056.

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

It is not a de Polignac number, because 650421986065 - 2³⁹ = 100666172177 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 9442911 + ... + 9511540.

It is an arithmetic number, because the mean of its divisors is an integer number (97577518896).

Almost surely, 2^650421986065 is an apocalyptic number.

It is an amenable number.

650421986065 is a deficient number, since it is larger than the sum of its proper divisors (130198165103).

650421986065 is a wasteful number, since it uses less digits than its factorization.

650421986065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18961319.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 650421986065 in words is "six hundred fifty billion, four hundred twenty-one million, nine hundred eighty-six thousand, sixty-five".