20321245924117 has 32 divisors (see below), whose sum is σ = 22638969612000. Its totient is φ = 18153326542848.

The previous prime is 20321245924103. The next prime is 20321245924153. The reversal of 20321245924117 is 71142954212302.

It can be written as a sum of positive squares in 16 ways, for example, as 6264077918596 + 14057168005521 = 2502814^2 + 3749289^2 .

It is a cyclic number.

It is not a de Polignac number, because 20321245924117 - 2⁷ = 20321245923989 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 (20321245924417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5699343 + ... + 8551315.

It is an arithmetic number, because the mean of its divisors is an integer number (707467800375).

Almost surely, 2^{20321245924117} is an apocalyptic number.

It is an amenable number.

20321245924117 is a deficient number, since it is larger than the sum of its proper divisors (2317723687883).

20321245924117 is a wasteful number, since it uses less digits than its factorization.

20321245924117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852265.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 20321245924117 in words is "twenty trillion, three hundred twenty-one billion, two hundred forty-five million, nine hundred twenty-four thousand, one hundred seventeen".