196659475723 has 4 divisors (see below), whose sum is σ = 196664042088. Its totient is φ = 196654909360.

The previous prime is 196659475681. The next prime is 196659475729. The reversal of 196659475723 is 327574956691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327574956691 = 366467 ⋅893873.

It is a cyclic number.

It is not a de Polignac number, because 196659475723 - 2¹³ = 196659467531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196659475729) 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, 2217961 + ... + 2304922.

It is an arithmetic number, because the mean of its divisors is an integer number (49166010522).

Almost surely, 2^196659475723 is an apocalyptic number.

196659475723 is a deficient number, since it is larger than the sum of its proper divisors (4566365).

196659475723 is an equidigital number, since it uses as much as digits as its factorization.

196659475723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566364.

The product of its digits is 85730400, while the sum is 64.

The spelling of 196659475723 in words is "one hundred ninety-six billion, six hundred fifty-nine million, four hundred seventy-five thousand, seven hundred twenty-three".