196448216091 has 16 divisors (see below), whose sum is σ = 265129877376. Its totient is φ = 129366529856.

The previous prime is 196448216087. The next prime is 196448216149. The reversal of 196448216091 is 190612844691.

It is a cyclic number.

It is not a de Polignac number, because 196448216091 - 2² = 196448216087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196448216891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1550836 + ... + 1672718.

It is an arithmetic number, because the mean of its divisors is an integer number (16570617336).

Almost surely, 2^196448216091 is an apocalyptic number.

196448216091 is a deficient number, since it is larger than the sum of its proper divisors (68681661285).

196448216091 is a wasteful number, since it uses less digits than its factorization.

196448216091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128442.

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 196448216091 in words is "one hundred ninety-six billion, four hundred forty-eight million, two hundred sixteen thousand, ninety-one".