148816661897 has 2 divisors, whose sum is σ = 148816661898. Its totient is φ = 148816661896.

The previous prime is 148816661887. The next prime is 148816661909. The reversal of 148816661897 is 798166618841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147478272841 + 1338389056 = 384029^2 + 36584^2 .

It is a cyclic number.

It is not a de Polignac number, because 148816661897 - 2¹⁰ = 148816660873 is a prime.

It is a super-3 number, since 3×148816661897³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (148816661837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74408330948 + 74408330949.

It is an arithmetic number, because the mean of its divisors is an integer number (74408330949).

Almost surely, 2^148816661897 is an apocalyptic number.

It is an amenable number.

148816661897 is a deficient number, since it is larger than the sum of its proper divisors (1).

148816661897 is an equidigital number, since it uses as much as digits as its factorization.

148816661897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27869184, while the sum is 65.

The spelling of 148816661897 in words is "one hundred forty-eight billion, eight hundred sixteen million, six hundred sixty-one thousand, eight hundred ninety-seven".