16651506041 has 2 divisors, whose sum is σ = 16651506042. Its totient is φ = 16651506040.

The previous prime is 16651506037. The next prime is 16651506043. The reversal of 16651506041 is 14060515661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8903809600 + 7747696441 = 94360^2 + 88021^2 .

It is a cyclic number.

It is not a de Polignac number, because 16651506041 - 2² = 16651506037 is a prime.

Together with 16651506043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16651505992 and 16651506010.

It is not a weakly prime, because it can be changed into another prime (16651506043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8325753020 + 8325753021.

It is an arithmetic number, because the mean of its divisors is an integer number (8325753021).

Almost surely, 2^16651506041 is an apocalyptic number.

It is an amenable number.

16651506041 is a deficient number, since it is larger than the sum of its proper divisors (1).

16651506041 is an equidigital number, since it uses as much as digits as its factorization.

16651506041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 16651506041 in words is "sixteen billion, six hundred fifty-one million, five hundred six thousand, forty-one".