20730307561606 has 8 divisors (see below), whose sum is σ = 31102810790544. Its totient is φ = 10362703964760.

The previous prime is 20730307561583. The next prime is 20730307561643. The reversal of 20730307561606 is 60616570303702.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224897445 + ... + 1224914368.

It is an arithmetic number, because the mean of its divisors is an integer number (3887851348818).

Almost surely, 2^{20730307561606} is an apocalyptic number.

20730307561606 is a deficient number, since it is larger than the sum of its proper divisors (10372503228938).

20730307561606 is a wasteful number, since it uses less digits than its factorization.

20730307561606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449816046.

The product of its (nonzero) digits is 952560, while the sum is 46.

The spelling of 20730307561606 in words is "twenty trillion, seven hundred thirty billion, three hundred seven million, five hundred sixty-one thousand, six hundred six".