163489345497 has 12 divisors (see below), whose sum is σ = 238444009024. Its totient is φ = 107934712920.

The previous prime is 163489345489. The next prime is 163489345561. The reversal of 163489345497 is 794543984361.

163489345497 is a `hidden beast` number, since 1 + 6 + 3 + 4 + 8 + 93 + 454 + 97 = 666.

It is not a de Polignac number, because 163489345497 - 2³ = 163489345489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163489345997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88181029 + ... + 88182882.

Almost surely, 2^163489345497 is an apocalyptic number.

It is an amenable number.

163489345497 is a deficient number, since it is larger than the sum of its proper divisors (74954663527).

163489345497 is a wasteful number, since it uses less digits than its factorization.

163489345497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176364020 (or 176364017 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 163489345497 in words is "one hundred sixty-three billion, four hundred eighty-nine million, three hundred forty-five thousand, four hundred ninety-seven".