196816537478 has 32 divisors (see below), whose sum is σ = 324307272960. Its totient is φ = 88839180000.

The previous prime is 196816537459. The next prime is 196816537499. The reversal of 196816537478 is 874735618691.

196816537478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11748188 + ... + 11764928.

It is an arithmetic number, because the mean of its divisors is an integer number (10134602280).

Almost surely, 2^196816537478 is an apocalyptic number.

196816537478 is a deficient number, since it is larger than the sum of its proper divisors (127490735482).

196816537478 is a wasteful number, since it uses less digits than its factorization.

196816537478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20444.

The product of its digits is 60963840, while the sum is 65.

The spelling of 196816537478 in words is "one hundred ninety-six billion, eight hundred sixteen million, five hundred thirty-seven thousand, four hundred seventy-eight".