6621259423 has 2 divisors, whose sum is σ = 6621259424. Its totient is φ = 6621259422.

The previous prime is 6621259367. The next prime is 6621259429. The reversal of 6621259423 is 3249521266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6621259423 - 2⁹ = 6621258911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6621259429) 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 as a sum of consecutive naturals, namely, 3310629711 + 3310629712.

It is an arithmetic number, because the mean of its divisors is an integer number (3310629712).

Almost surely, 2^6621259423 is an apocalyptic number.

6621259423 is a deficient number, since it is larger than the sum of its proper divisors (1).

6621259423 is an equidigital number, since it uses as much as digits as its factorization.

6621259423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 6621259423 is about 81371.1215542713. The cubic root of 6621259423 is about 1877.7893344354.

The spelling of 6621259423 in words is "six billion, six hundred twenty-one million, two hundred fifty-nine thousand, four hundred twenty-three".