20321066335145 has 8 divisors (see below), whose sum is σ = 24410086606656. Its totient is φ = 16240315065136.

The previous prime is 20321066335133. The next prime is 20321066335153. The reversal of 20321066335145 is 54153366012302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20321066335145 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2067244967 + ... + 2067254796.

It is an arithmetic number, because the mean of its divisors is an integer number (3051260825832).

Almost surely, 2^{20321066335145} is an apocalyptic number.

It is an amenable number.

20321066335145 is a deficient number, since it is larger than the sum of its proper divisors (4089020271511).

20321066335145 is an equidigital number, since it uses as much as digits as its factorization.

20321066335145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134500751.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 20321066335145 in words is "twenty trillion, three hundred twenty-one billion, sixty-six million, three hundred thirty-five thousand, one hundred forty-five".