197749196099 has 32 divisors (see below), whose sum is σ = 247037521920. Its totient is φ = 154121190912.

The previous prime is 197749196083. The next prime is 197749196111. The reversal of 197749196099 is 990691947791.

It is a Cunningham number, because it is equal to 444690²-1.

It is not a de Polignac number, because 197749196099 - 2⁴ = 197749196083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197749196299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3081074 + ... + 3144600.

It is an arithmetic number, because the mean of its divisors is an integer number (7719922560).

Almost surely, 2^197749196099 is an apocalyptic number.

197749196099 is a deficient number, since it is larger than the sum of its proper divisors (49288325821).

197749196099 is a wasteful number, since it uses less digits than its factorization.

197749196099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64059.

The product of its (nonzero) digits is 69441624, while the sum is 71.

The spelling of 197749196099 in words is "one hundred ninety-seven billion, seven hundred forty-nine million, one hundred ninety-six thousand, ninety-nine".