16627949497 has 2 divisors, whose sum is σ = 16627949498. Its totient is φ = 16627949496.

The previous prime is 16627949489. The next prime is 16627949531. The reversal of 16627949497 is 79494972661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10132234281 + 6495715216 = 100659^2 + 80596^2 .

It is a cyclic number.

It is not a de Polignac number, because 16627949497 - 2³ = 16627949489 is a prime.

It is not a weakly prime, because it can be changed into another prime (16627949447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8313974748 + 8313974749.

It is an arithmetic number, because the mean of its divisors is an integer number (8313974749).

Almost surely, 2^16627949497 is an apocalyptic number.

It is an amenable number.

16627949497 is a deficient number, since it is larger than the sum of its proper divisors (1).

16627949497 is an equidigital number, since it uses as much as digits as its factorization.

16627949497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41150592, while the sum is 64.

The spelling of 16627949497 in words is "sixteen billion, six hundred twenty-seven million, nine hundred forty-nine thousand, four hundred ninety-seven".