196217165865 has 128 divisors (see below), whose sum is σ = 372968893440. Its totient is φ = 86220288000.

The previous prime is 196217165831. The next prime is 196217165909. The reversal of 196217165865 is 568561712691.

It is not a de Polignac number, because 196217165865 - 2⁸ = 196217165609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 279910015 + ... + 279910715.

It is an arithmetic number, because the mean of its divisors is an integer number (2913819480).

Almost surely, 2^196217165865 is an apocalyptic number.

196217165865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

196217165865 is a deficient number, since it is larger than the sum of its proper divisors (176751727575).

196217165865 is a wasteful number, since it uses less digits than its factorization.

196217165865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its digits is 5443200, while the sum is 57.

The spelling of 196217165865 in words is "one hundred ninety-six billion, two hundred seventeen million, one hundred sixty-five thousand, eight hundred sixty-five".