16720858115207 has 2 divisors, whose sum is σ = 16720858115208. Its totient is φ = 16720858115206.

The previous prime is 16720858115149. The next prime is 16720858115237. The reversal of 16720858115207 is 70251185802761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16720858115207 - 2⁸ = 16720858114951 is a prime.

It is a super-2 number, since 2×16720858115207² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16720858115237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8360429057603 + 8360429057604.

It is an arithmetic number, because the mean of its divisors is an integer number (8360429057604).

Almost surely, 2^{16720858115207} is an apocalyptic number.

16720858115207 is a deficient number, since it is larger than the sum of its proper divisors (1).

16720858115207 is an equidigital number, since it uses as much as digits as its factorization.

16720858115207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1881600, while the sum is 53.

The spelling of 16720858115207 in words is "sixteen trillion, seven hundred twenty billion, eight hundred fifty-eight million, one hundred fifteen thousand, two hundred seven".