197113821867 has 64 divisors (see below), whose sum is σ = 307401346560. Its totient is φ = 124675189632.

The previous prime is 197113821859. The next prime is 197113821973. The reversal of 197113821867 is 768128311791.

197113821867 is a `hidden beast` number, since 19 + 71 + 1 + 382 + 186 + 7 = 666.

It is not a de Polignac number, because 197113821867 - 2³ = 197113821859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197113821167) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28047408 + ... + 28054434.

It is an arithmetic number, because the mean of its divisors is an integer number (4803146040).

Almost surely, 2^197113821867 is an apocalyptic number.

197113821867 is a deficient number, since it is larger than the sum of its proper divisors (110287524693).

197113821867 is a wasteful number, since it uses less digits than its factorization.

197113821867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7769 (or 7763 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The spelling of 197113821867 in words is "one hundred ninety-seven billion, one hundred thirteen million, eight hundred twenty-one thousand, eight hundred sixty-seven".