161262510307 has 2 divisors, whose sum is σ = 161262510308. Its totient is φ = 161262510306.

The previous prime is 161262510281. The next prime is 161262510349. The reversal of 161262510307 is 703015262161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161262510307 is a prime.

It is not a weakly prime, because it can be changed into another prime (161262510007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80631255153 + 80631255154.

It is an arithmetic number, because the mean of its divisors is an integer number (80631255154).

Almost surely, 2^161262510307 is an apocalyptic number.

161262510307 is a deficient number, since it is larger than the sum of its proper divisors (1).

161262510307 is an equidigital number, since it uses as much as digits as its factorization.

161262510307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

Adding to 161262510307 its reverse (703015262161), we get a palindrome (864277772468).

The spelling of 161262510307 in words is "one hundred sixty-one billion, two hundred sixty-two million, five hundred ten thousand, three hundred seven".