20173606623307 has 2 divisors, whose sum is σ = 20173606623308. Its totient is φ = 20173606623306.

The previous prime is 20173606623301. The next prime is 20173606623311. The reversal of 20173606623307 is 70332660637102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20173606623307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20173606623301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10086803311653 + 10086803311654.

It is an arithmetic number, because the mean of its divisors is an integer number (10086803311654).

Almost surely, 2^{20173606623307} is an apocalyptic number.

20173606623307 is a deficient number, since it is larger than the sum of its proper divisors (1).

20173606623307 is an equidigital number, since it uses as much as digits as its factorization.

20173606623307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 46.

The spelling of 20173606623307 in words is "twenty trillion, one hundred seventy-three billion, six hundred six million, six hundred twenty-three thousand, three hundred seven".