196807983671 has 4 divisors (see below), whose sum is σ = 211947059352. Its totient is φ = 181668907992.

The previous prime is 196807983667. The next prime is 196807983737. The reversal of 196807983671 is 176389708691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176389708691 = 7 ⋅25198529813.

It is not a de Polignac number, because 196807983671 - 2² = 196807983667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 196807983598 and 196807983607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196807980671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7569537821 + ... + 7569537846.

It is an arithmetic number, because the mean of its divisors is an integer number (52986764838).

Almost surely, 2^196807983671 is an apocalyptic number.

196807983671 is a deficient number, since it is larger than the sum of its proper divisors (15139075681).

196807983671 is a wasteful number, since it uses less digits than its factorization.

196807983671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15139075680.

The product of its (nonzero) digits is 27433728, while the sum is 65.

The spelling of 196807983671 in words is "one hundred ninety-six billion, eight hundred seven million, nine hundred eighty-three thousand, six hundred seventy-one".