197489453517 has 12 divisors (see below), whose sum is σ = 297665263584. Its totient is φ = 125935303560.

The previous prime is 197489453503. The next prime is 197489453519. The reversal of 197489453517 is 715354984791.

197489453517 is a `hidden beast` number, since 1 + 9 + 7 + 4 + 8 + 94 + 535 + 1 + 7 = 666.

It is not a de Polignac number, because 197489453517 - 2⁴ = 197489453501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197489453519) 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, 477027459 + ... + 477027872.

It is an arithmetic number, because the mean of its divisors is an integer number (24805438632).

Almost surely, 2^197489453517 is an apocalyptic number.

It is an amenable number.

197489453517 is a deficient number, since it is larger than the sum of its proper divisors (100175810067).

197489453517 is a wasteful number, since it uses less digits than its factorization.

197489453517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954055360 (or 954055357 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 63.

The spelling of 197489453517 in words is "one hundred ninety-seven billion, four hundred eighty-nine million, four hundred fifty-three thousand, five hundred seventeen".