14553928208621 has 4 divisors (see below), whose sum is σ = 14572189098012. Its totient is φ = 14535667319232.

The previous prime is 14553928208581. The next prime is 14553928208639. The reversal of 14553928208621 is 12680282935541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7518092383396 + 7035835825225 = 2741914^2 + 2652515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14553928208621 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 (14553928208681) 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 3 ways as a sum of consecutive naturals, for example, 9130443500 + ... + 9130445093.

It is an arithmetic number, because the mean of its divisors is an integer number (3643047274503).

Almost surely, 2^{14553928208621} is an apocalyptic number.

It is an amenable number.

14553928208621 is a deficient number, since it is larger than the sum of its proper divisors (18260889391).

14553928208621 is an equidigital number, since it uses as much as digits as its factorization.

14553928208621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18260889390.

The product of its (nonzero) digits is 8294400, while the sum is 56.

The spelling of 14553928208621 in words is "fourteen trillion, five hundred fifty-three billion, nine hundred twenty-eight million, two hundred eight thousand, six hundred twenty-one".