197681960488 has 8 divisors (see below), whose sum is σ = 370653675930. Its totient is φ = 98840980240.

The previous prime is 197681960467. The next prime is 197681960491. The reversal of 197681960488 is 884069186791.

It can be written as a sum of positive squares in only one way, i.e., 189714255844 + 7967704644 = 435562^2 + 89262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12355122523 + ... + 12355122538.

Almost surely, 2^197681960488 is an apocalyptic number.

It is an amenable number.

197681960488 is a deficient number, since it is larger than the sum of its proper divisors (172971715442).

197681960488 is a wasteful number, since it uses less digits than its factorization.

197681960488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24710245067 (or 24710245063 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 67.

The spelling of 197681960488 in words is "one hundred ninety-seven billion, six hundred eighty-one million, nine hundred sixty thousand, four hundred eighty-eight".