6553421923 has 16 divisors (see below), whose sum is σ = 6857579520. Its totient is φ = 6256526976.

The previous prime is 6553421899. The next prime is 6553421929. The reversal of 6553421923 is 3291243556.

It is a cyclic number.

It is not a de Polignac number, because 6553421923 - 2⁹ = 6553421411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6553421929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972858 + ... + 1976176.

It is an arithmetic number, because the mean of its divisors is an integer number (428598720).

Almost surely, 2^6553421923 is an apocalyptic number.

6553421923 is a deficient number, since it is larger than the sum of its proper divisors (304157597).

6553421923 is a wasteful number, since it uses less digits than its factorization.

6553421923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386.

The product of its digits is 194400, while the sum is 40.

The square root of 6553421923 is about 80953.2082316692. The cubic root of 6553421923 is about 1871.3544024229.

The spelling of 6553421923 in words is "six billion, five hundred fifty-three million, four hundred twenty-one thousand, nine hundred twenty-three".