6366142821 has 8 divisors (see below), whose sum is σ = 8495169984. Its totient is φ = 4240605440.

The previous prime is 6366142807. The next prime is 6366142829. The reversal of 6366142821 is 1282416636.

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

It is a cyclic number.

It is not a de Polignac number, because 6366142821 - 2⁹ = 6366142309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6366142821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6366142829) by changing a digit.

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, 868185 + ... + 875486.

It is an arithmetic number, because the mean of its divisors is an integer number (1061896248).

Almost surely, 2^6366142821 is an apocalyptic number.

It is an amenable number.

6366142821 is a deficient number, since it is larger than the sum of its proper divisors (2129027163).

6366142821 is a wasteful number, since it uses less digits than its factorization.

6366142821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744891.

The product of its digits is 82944, while the sum is 39.

The square root of 6366142821 is about 79788.1120280459. The cubic root of 6366142821 is about 1853.3557617628.

The spelling of 6366142821 in words is "six billion, three hundred sixty-six million, one hundred forty-two thousand, eight hundred twenty-one".