6681621435303 has 8 divisors (see below), whose sum is σ = 8948778485248. Its totient is φ = 4434439337784.

The previous prime is 6681621435173. The next prime is 6681621435373. The reversal of 6681621435303 is 3035341261866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6681621435303 - 2³⁶ = 6612901958567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681621435373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4993737325 + ... + 4993738662.

It is an arithmetic number, because the mean of its divisors is an integer number (1118597310656).

Almost surely, 2^{6681621435303} is an apocalyptic number.

6681621435303 is a deficient number, since it is larger than the sum of its proper divisors (2267157049945).

6681621435303 is a wasteful number, since it uses less digits than its factorization.

6681621435303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9987476213.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 6681621435303 in words is "six trillion, six hundred eighty-one billion, six hundred twenty-one million, four hundred thirty-five thousand, three hundred three".