207639530123 has 2 divisors, whose sum is σ = 207639530124. Its totient is φ = 207639530122.

The previous prime is 207639530117. The next prime is 207639530243. The reversal of 207639530123 is 321035936702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 207639530123 - 2⁴ = 207639530107 is a prime.

It is a super-2 number, since 2×207639530123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (207639538123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103819765061 + 103819765062.

It is an arithmetic number, because the mean of its divisors is an integer number (103819765062).

Almost surely, 2^207639530123 is an apocalyptic number.

207639530123 is a deficient number, since it is larger than the sum of its proper divisors (1).

207639530123 is an equidigital number, since it uses as much as digits as its factorization.

207639530123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 41.

The spelling of 207639530123 in words is "two hundred seven billion, six hundred thirty-nine million, five hundred thirty thousand, one hundred twenty-three".