196266248081 has 2 divisors, whose sum is σ = 196266248082. Its totient is φ = 196266248080.

The previous prime is 196266248071. The next prime is 196266248099. The reversal of 196266248081 is 180842662691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194635380625 + 1630867456 = 441175^2 + 40384^2 .

It is a cyclic number.

It is not a de Polignac number, because 196266248081 - 2²⁶ = 196199139217 is a prime.

It is a super-2 number, since 2×196266248081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (196266248011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98133124040 + 98133124041.

It is an arithmetic number, because the mean of its divisors is an integer number (98133124041).

Almost surely, 2^196266248081 is an apocalyptic number.

It is an amenable number.

196266248081 is a deficient number, since it is larger than the sum of its proper divisors (1).

196266248081 is an equidigital number, since it uses as much as digits as its factorization.

196266248081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 196266248081 in words is "one hundred ninety-six billion, two hundred sixty-six million, two hundred forty-eight thousand, eighty-one".