6556621032323 has 4 divisors (see below), whose sum is σ = 6556684787520. Its totient is φ = 6556557277128.

The previous prime is 6556621032307. The next prime is 6556621032337. The reversal of 6556621032323 is 3232301266556.

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

It is a cyclic number.

It is not a de Polignac number, because 6556621032323 - 2⁴ = 6556621032307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556621032343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31723088 + ... + 31929101.

It is an arithmetic number, because the mean of its divisors is an integer number (1639171196880).

Almost surely, 2^{6556621032323} is an apocalyptic number.

6556621032323 is a deficient number, since it is larger than the sum of its proper divisors (63755197).

6556621032323 is a wasteful number, since it uses less digits than its factorization.

6556621032323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63755196.

The product of its (nonzero) digits is 1166400, while the sum is 44.

Adding to 6556621032323 its reverse (3232301266556), we get a palindrome (9788922298879).

The spelling of 6556621032323 in words is "six trillion, five hundred fifty-six billion, six hundred twenty-one million, thirty-two thousand, three hundred twenty-three".