16575027649 has 2 divisors, whose sum is σ = 16575027650. Its totient is φ = 16575027648.

The previous prime is 16575027613. The next prime is 16575027653. The reversal of 16575027649 is 94672057561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12076911025 + 4498116624 = 109895^2 + 67068^2 .

It is a cyclic number.

It is not a de Polignac number, because 16575027649 - 2¹⁵ = 16574994881 is a prime.

It is a super-2 number, since 2×16575027649² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16575027596 and 16575027605.

It is not a weakly prime, because it can be changed into another prime (16575024649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8287513824 + 8287513825.

It is an arithmetic number, because the mean of its divisors is an integer number (8287513825).

Almost surely, 2^16575027649 is an apocalyptic number.

It is an amenable number.

16575027649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16575027649 is an equidigital number, since it uses as much as digits as its factorization.

16575027649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 16575027649 in words is "sixteen billion, five hundred seventy-five million, twenty-seven thousand, six hundred forty-nine".