6642006044 has 12 divisors (see below), whose sum is σ = 11630800104. Its totient is φ = 3318920304.

The previous prime is 6642006043. The next prime is 6642006053. The reversal of 6642006044 is 4406002466.

It is a self number, because there is not a number n which added to its sum of digits gives 6642006044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642006043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513494 + ... + 526269.

It is an arithmetic number, because the mean of its divisors is an integer number (969233342).

Almost surely, 2^6642006044 is an apocalyptic number.

It is an amenable number.

6642006044 is a deficient number, since it is larger than the sum of its proper divisors (4988794060).

6642006044 is a wasteful number, since it uses less digits than its factorization.

6642006044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041364 (or 1041362 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 6642006044 is about 81498.5033236807. The cubic root of 6642006044 is about 1879.7485369868.

The spelling of 6642006044 in words is "six billion, six hundred forty-two million, six thousand, forty-four".