646051009611 has 8 divisors (see below), whose sum is σ = 984458681344. Its totient is φ = 369172005480.

The previous prime is 646051009511. The next prime is 646051009627. The reversal of 646051009611 is 116900150646.

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

It is not a de Polignac number, because 646051009611 - 2¹⁰ = 646051008587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 646051009611.

It is not an unprimeable number, because it can be changed into a prime (646051009651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15382166875 + ... + 15382166916.

It is an arithmetic number, because the mean of its divisors is an integer number (123057335168).

Almost surely, 2^646051009611 is an apocalyptic number.

646051009611 is a deficient number, since it is larger than the sum of its proper divisors (338407671733).

646051009611 is a wasteful number, since it uses less digits than its factorization.

646051009611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30764333801.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 646051009611 in words is "six hundred forty-six billion, fifty-one million, nine thousand, six hundred eleven".