196195996872 has 36 divisors (see below), whose sum is σ = 531374337585. Its totient is φ = 65397412800.

The previous prime is 196195996831. The next prime is 196195996877. The reversal of 196195996872 is 278699591691.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

196195996872 is a `hidden beast` number, since 19 + 6 + 19 + 599 + 6 + 8 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 167990137956 + 28205858916 = 409866^2 + 167946^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=313206.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 196195996872.

It is not an unprimeable number, because it can be changed into a prime (196195996877) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3732372 + ... + 3784572.

Almost surely, 2^196195996872 is an apocalyptic number.

196195996872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

196195996872 is an abundant number, since it is smaller than the sum of its proper divisors (335178340713).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196195996872 is an frugal number, since it uses more digits than its factorization.

196195996872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104414 (or 52206 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 72.

Multiplying 196195996872 by its sum of digits (72), we get a square (14126111774784 = 3758472²).

196195996872 divided by its sum of digits (72) gives a square (2724944401 = 52201²).

The spelling of 196195996872 in words is "one hundred ninety-six billion, one hundred ninety-five million, nine hundred ninety-six thousand, eight hundred seventy-two".