16720545761351 has 2 divisors, whose sum is σ = 16720545761352. Its totient is φ = 16720545761350.

The previous prime is 16720545761327. The next prime is 16720545761369. The reversal of 16720545761351 is 15316754502761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16720545761351 - 2¹⁴ = 16720545744967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16720545761293 and 16720545761302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16720545767351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8360272880675 + 8360272880676.

It is an arithmetic number, because the mean of its divisors is an integer number (8360272880676).

Almost surely, 2^{16720545761351} is an apocalyptic number.

16720545761351 is a deficient number, since it is larger than the sum of its proper divisors (1).

16720545761351 is an equidigital number, since it uses as much as digits as its factorization.

16720545761351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 16720545761351 in words is "sixteen trillion, seven hundred twenty billion, five hundred forty-five million, seven hundred sixty-one thousand, three hundred fifty-one".