196445863553 has 2 divisors, whose sum is σ = 196445863554. Its totient is φ = 196445863552.

The previous prime is 196445863543. The next prime is 196445863577. The reversal of 196445863553 is 355368544691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100747203649 + 95698659904 = 317407^2 + 309352^2 .

It is a cyclic number.

It is not a de Polignac number, because 196445863553 - 2³² = 192150896257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 196445863492 and 196445863501.

It is not a weakly prime, because it can be changed into another prime (196445863543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98222931776 + 98222931777.

It is an arithmetic number, because the mean of its divisors is an integer number (98222931777).

Almost surely, 2^196445863553 is an apocalyptic number.

It is an amenable number.

196445863553 is a deficient number, since it is larger than the sum of its proper divisors (1).

196445863553 is an equidigital number, since it uses as much as digits as its factorization.

196445863553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656000, while the sum is 59.

The spelling of 196445863553 in words is "one hundred ninety-six billion, four hundred forty-five million, eight hundred sixty-three thousand, five hundred fifty-three".