20321054664061 has 8 divisors (see below), whose sum is σ = 20706791620320. Its totient is φ = 19935403664592.

The previous prime is 20321054664049. The next prime is 20321054664073. The reversal of 20321054664061 is 16046645012302.

It is an interprime number because it is at equal distance from previous prime (20321054664049) and next prime (20321054664073).

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 20321054664061 - 2²⁵ = 20321021109629 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 (20321054664041) 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, 21011791 + ... + 21957628.

It is an arithmetic number, because the mean of its divisors is an integer number (2588348952540).

Almost surely, 2^{20321054664061} is an apocalyptic number.

It is an amenable number.

20321054664061 is a deficient number, since it is larger than the sum of its proper divisors (385736956259).

20321054664061 is an equidigital number, since it uses as much as digits as its factorization.

20321054664061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42978395.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 20321054664061 its reverse (16046645012302), we get a palindrome (36367699676363).

The spelling of 20321054664061 in words is "twenty trillion, three hundred twenty-one billion, fifty-four million, six hundred sixty-four thousand, sixty-one".