6621052355 has 4 divisors (see below), whose sum is σ = 7945262832. Its totient is φ = 5296841880.

The previous prime is 6621052337. The next prime is 6621052363. The reversal of 6621052355 is 5532501266.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-6621052355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 662105231 + ... + 662105240.

It is an arithmetic number, because the mean of its divisors is an integer number (1986315708).

Almost surely, 2^6621052355 is an apocalyptic number.

6621052355 is a deficient number, since it is larger than the sum of its proper divisors (1324210477).

6621052355 is a wasteful number, since it uses less digits than its factorization.

6621052355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324210476.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 6621052355 is about 81369.8491764609. The cubic root of 6621052355 is about 1877.7697594014.

The spelling of 6621052355 in words is "six billion, six hundred twenty-one million, fifty-two thousand, three hundred fifty-five".