197958950127 has 6 divisors (see below), whose sum is σ = 285940705752. Its totient is φ = 131972633412.

The previous prime is 197958950087. The next prime is 197958950149. The reversal of 197958950127 is 721059859791.

197958950127 is a `hidden beast` number, since 1 + 9 + 79 + 58 + 9 + 501 + 2 + 7 = 666.

It is not a de Polignac number, because 197958950127 - 2⁷ = 197958949999 is a prime.

It is a super-2 number, since 2×197958950127² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197958950027) 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 in 5 ways as a sum of consecutive naturals, for example, 10997719443 + ... + 10997719460.

It is an arithmetic number, because the mean of its divisors is an integer number (47656784292).

Almost surely, 2^197958950127 is an apocalyptic number.

197958950127 is a deficient number, since it is larger than the sum of its proper divisors (87981755625).

197958950127 is a wasteful number, since it uses less digits than its factorization.

197958950127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21995438909 (or 21995438906 counting only the distinct ones).

The product of its (nonzero) digits is 14288400, while the sum is 63.

The spelling of 197958950127 in words is "one hundred ninety-seven billion, nine hundred fifty-eight million, nine hundred fifty thousand, one hundred twenty-seven".