20680323762473 has 4 divisors (see below), whose sum is σ = 20689982953668. Its totient is φ = 20670664571280.

The previous prime is 20680323762467. The next prime is 20680323762481. The reversal of 20680323762473 is 37426732308602.

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 10073336517904 + 10606987244569 = 3173852^2 + 3256837^2 .

It is a cyclic number.

It is not a de Polignac number, because 20680323762473 - 2⁴ = 20680323762457 is a prime.

It is a super-3 number, since 3×20680323762473³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20680323767473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4829592386 + ... + 4829596667.

It is an arithmetic number, because the mean of its divisors is an integer number (5172495738417).

Almost surely, 2^{20680323762473} is an apocalyptic number.

It is an amenable number.

20680323762473 is a deficient number, since it is larger than the sum of its proper divisors (9659191195).

20680323762473 is an equidigital number, since it uses as much as digits as its factorization.

20680323762473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9659191194.

The product of its (nonzero) digits is 12192768, while the sum is 53.

The spelling of 20680323762473 in words is "twenty trillion, six hundred eighty billion, three hundred twenty-three million, seven hundred sixty-two thousand, four hundred seventy-three".