254420043251197 has 2 divisors, whose sum is σ = 254420043251198. Its totient is φ = 254420043251196.

The previous prime is 254420043251167. The next prime is 254420043251303. The reversal of 254420043251197 is 791152340024452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206800189541401 + 47619853709796 = 14380549^2 + 6900714^2 .

It is a cyclic number.

It is not a de Polignac number, because 254420043251197 - 2¹¹ = 254420043249149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 254420043251197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254420043251117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127210021625598 + 127210021625599.

It is an arithmetic number, because the mean of its divisors is an integer number (127210021625599).

Almost surely, 2^{254420043251197} is an apocalyptic number.

It is an amenable number.

254420043251197 is a deficient number, since it is larger than the sum of its proper divisors (1).

254420043251197 is an equidigital number, since it uses as much as digits as its factorization.

254420043251197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 254420043251197 in words is "two hundred fifty-four trillion, four hundred twenty billion, forty-three million, two hundred fifty-one thousand, one hundred ninety-seven".