646506043211611 has 8 divisors (see below), whose sum is σ = 705360883440384. Its totient is φ = 587664796911720.

The previous prime is 646506043211557. The next prime is 646506043211669. The reversal of 646506043211611 is 116112340605646.

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

It is not a de Polignac number, because 646506043211611 - 2⁹ = 646506043211099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646506043211671) 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, 3398382775 + ... + 3398573008.

It is an arithmetic number, because the mean of its divisors is an integer number (88170110430048).

Almost surely, 2^{646506043211611} is an apocalyptic number.

646506043211611 is a deficient number, since it is larger than the sum of its proper divisors (58854840228773).

646506043211611 is a wasteful number, since it uses less digits than its factorization.

646506043211611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6796964441.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 646506043211611 in words is "six hundred forty-six trillion, five hundred six billion, forty-three million, two hundred eleven thousand, six hundred eleven".