196255889781 has 8 divisors (see below), whose sum is σ = 299056593984. Its totient is φ = 112146222720.

The previous prime is 196255889761. The next prime is 196255889839. The reversal of 196255889781 is 187988552691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 196255889781 - 2⁵ = 196255889749 is a prime.

It is a super-2 number, since 2×196255889781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196255889741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4672759260 + ... + 4672759301.

It is an arithmetic number, because the mean of its divisors is an integer number (37382074248).

Almost surely, 2^196255889781 is an apocalyptic number.

It is an amenable number.

196255889781 is a deficient number, since it is larger than the sum of its proper divisors (102800704203).

196255889781 is an equidigital number, since it uses as much as digits as its factorization.

196255889781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9345518571.

The product of its digits is 87091200, while the sum is 69.

The spelling of 196255889781 in words is "one hundred ninety-six billion, two hundred fifty-five million, eight hundred eighty-nine thousand, seven hundred eighty-one".