194999998453451 has 2 divisors, whose sum is σ = 194999998453452. Its totient is φ = 194999998453450.

The previous prime is 194999998453297. The next prime is 194999998453453. The reversal of 194999998453451 is 154354899999491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194999998453451 is a prime.

Together with 194999998453453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194999998453453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97499999226725 + 97499999226726.

It is an arithmetic number, because the mean of its divisors is an integer number (97499999226726).

Almost surely, 2^{194999998453451} is an apocalyptic number.

194999998453451 is a deficient number, since it is larger than the sum of its proper divisors (1).

194999998453451 is an equidigital number, since it uses as much as digits as its factorization.

194999998453451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20407334400, while the sum is 89.

The spelling of 194999998453451 in words is "one hundred ninety-four trillion, nine hundred ninety-nine billion, nine hundred ninety-eight million, four hundred fifty-three thousand, four hundred fifty-one".