16116116126501 has 2 divisors, whose sum is σ = 16116116126502. Its totient is φ = 16116116126500.

The previous prime is 16116116126483. The next prime is 16116116126527. The reversal of 16116116126501 is 10562161161161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13930257370276 + 2185858756225 = 3732326^2 + 1478465^2 .

It is an emirp because it is prime and its reverse (10562161161161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16116116126501 - 2⁶ = 16116116126437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16116116126701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8058058063250 + 8058058063251.

It is an arithmetic number, because the mean of its divisors is an integer number (8058058063251).

Almost surely, 2^{16116116126501} is an apocalyptic number.

It is an amenable number.

16116116126501 is a deficient number, since it is larger than the sum of its proper divisors (1).

16116116126501 is an equidigital number, since it uses as much as digits as its factorization.

16116116126501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 38.

Adding to 16116116126501 its reverse (10562161161161), we get a palindrome (26678277287662).

The spelling of 16116116126501 in words is "sixteen trillion, one hundred sixteen billion, one hundred sixteen million, one hundred twenty-six thousand, five hundred one".