6421652339 has 2 divisors, whose sum is σ = 6421652340. Its totient is φ = 6421652338.

The previous prime is 6421652311. The next prime is 6421652353. The reversal of 6421652339 is 9332561246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6421652339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6421652296 and 6421652305.

It is not a weakly prime, because it can be changed into another prime (6421652359) 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 as a sum of consecutive naturals, namely, 3210826169 + 3210826170.

It is an arithmetic number, because the mean of its divisors is an integer number (3210826170).

Almost surely, 2^6421652339 is an apocalyptic number.

6421652339 is a deficient number, since it is larger than the sum of its proper divisors (1).

6421652339 is an equidigital number, since it uses as much as digits as its factorization.

6421652339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 41.

The square root of 6421652339 is about 80135.2128530274. The cubic root of 6421652339 is about 1858.7269528116.

The spelling of 6421652339 in words is "six billion, four hundred twenty-one million, six hundred fifty-two thousand, three hundred thirty-nine".