6650211645 has 96 divisors (see below), whose sum is σ = 15003239040. Its totient is φ = 2763694080.

The previous prime is 6650211629. The next prime is 6650211649. The reversal of 6650211645 is 5461120566.

6650211645 is a `hidden beast` number, since 6 + 6 + 5 + 0 + 2 + 1 + 1 + 645 = 666.

It is not a de Polignac number, because 6650211645 - 2⁴ = 6650211629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650211649) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27069 + ... + 118461.

It is an arithmetic number, because the mean of its divisors is an integer number (156283740).

Almost surely, 2^6650211645 is an apocalyptic number.

It is an amenable number.

6650211645 is an abundant number, since it is smaller than the sum of its proper divisors (8353027395).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6650211645 is a wasteful number, since it uses less digits than its factorization.

6650211645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91432 (or 91419 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 6650211645 is about 81548.8298199306. The cubic root of 6650211645 is about 1880.5223051768.

It can be divided in two parts, 665021 and 1645, that added together give a palindrome (666666).

The spelling of 6650211645 in words is "six billion, six hundred fifty million, two hundred eleven thousand, six hundred forty-five".