16749277577 has 2 divisors, whose sum is σ = 16749277578. Its totient is φ = 16749277576.

The previous prime is 16749277547. The next prime is 16749277583. The reversal of 16749277577 is 77577294761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16749277561 + 16 = 129419^2 + 4^2 .

It is an emirp because it is prime and its reverse (77577294761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16749277577 - 2¹² = 16749273481 is a prime.

It is not a weakly prime, because it can be changed into another prime (16749277547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8374638788 + 8374638789.

It is an arithmetic number, because the mean of its divisors is an integer number (8374638789).

Almost surely, 2^16749277577 is an apocalyptic number.

It is an amenable number.

16749277577 is a deficient number, since it is larger than the sum of its proper divisors (1).

16749277577 is an equidigital number, since it uses as much as digits as its factorization.

16749277577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36303120, while the sum is 62.

The spelling of 16749277577 in words is "sixteen billion, seven hundred forty-nine million, two hundred seventy-seven thousand, five hundred seventy-seven".