16505245927 has 2 divisors, whose sum is σ = 16505245928. Its totient is φ = 16505245926.

The previous prime is 16505245909. The next prime is 16505245943. The reversal of 16505245927 is 72954250561.

It is a strong prime.

It is an emirp because it is prime and its reverse (72954250561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16505245927 - 2¹⁵ = 16505213159 is a prime.

It is a super-2 number, since 2×16505245927² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16505245997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8252622963 + 8252622964.

It is an arithmetic number, because the mean of its divisors is an integer number (8252622964).

Almost surely, 2^16505245927 is an apocalyptic number.

16505245927 is a deficient number, since it is larger than the sum of its proper divisors (1).

16505245927 is an equidigital number, since it uses as much as digits as its factorization.

16505245927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 16505245927 in words is "sixteen billion, five hundred five million, two hundred forty-five thousand, nine hundred twenty-seven".