208617130507 has 2 divisors, whose sum is σ = 208617130508. Its totient is φ = 208617130506.

The previous prime is 208617130493. The next prime is 208617130531. The reversal of 208617130507 is 705031716802.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208617130507 is a prime.

It is a super-2 number, since 2×208617130507² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208617130507.

It is not a weakly prime, because it can be changed into another prime (208617830507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104308565253 + 104308565254.

It is an arithmetic number, because the mean of its divisors is an integer number (104308565254).

Almost surely, 2^208617130507 is an apocalyptic number.

208617130507 is a deficient number, since it is larger than the sum of its proper divisors (1).

208617130507 is an equidigital number, since it uses as much as digits as its factorization.

208617130507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 208617130507 in words is "two hundred eight billion, six hundred seventeen million, one hundred thirty thousand, five hundred seven".