196668064049 has 8 divisors (see below), whose sum is σ = 204099729960. Its totient is φ = 189279732096.

The previous prime is 196668063979. The next prime is 196668064051. The reversal of 196668064049 is 940460866691.

It can be written as a sum of positive squares in 4 ways, for example, as 6687150625 + 189980913424 = 81775^2 + 435868^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196668064049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196668069049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10824242 + ... + 10842395.

It is an arithmetic number, because the mean of its divisors is an integer number (25512466245).

Almost surely, 2^196668064049 is an apocalyptic number.

It is an amenable number.

196668064049 is a deficient number, since it is larger than the sum of its proper divisors (7431665911).

196668064049 is a wasteful number, since it uses less digits than its factorization.

196668064049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21666979.

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 196668064049 in words is "one hundred ninety-six billion, six hundred sixty-eight million, sixty-four thousand, forty-nine".