2154241664321 has 8 divisors (see below), whose sum is σ = 2224028223744. Its totient is φ = 2084473535760.

The previous prime is 2154241664299. The next prime is 2154241664339. The reversal of 2154241664321 is 1234661424512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154241664321 - 2⁶ = 2154241664257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154241664371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4369970 + ... + 4837883.

It is an arithmetic number, because the mean of its divisors is an integer number (278003527968).

Almost surely, 2^{2154241664321} is an apocalyptic number.

It is an amenable number.

2154241664321 is a deficient number, since it is larger than the sum of its proper divisors (69786559423).

2154241664321 is an equidigital number, since it uses as much as digits as its factorization.

2154241664321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9215431.

The product of its digits is 276480, while the sum is 41.

The spelling of 2154241664321 in words is "two trillion, one hundred fifty-four billion, two hundred forty-one million, six hundred sixty-four thousand, three hundred twenty-one".