194775545099 has 2 divisors, whose sum is σ = 194775545100. Its totient is φ = 194775545098.

The previous prime is 194775545087. The next prime is 194775545137. The reversal of 194775545099 is 990545577491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194775545099 - 2³⁶ = 126056068363 is a prime.

It is a super-2 number, since 2×194775545099² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194771545099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97387772549 + 97387772550.

It is an arithmetic number, because the mean of its divisors is an integer number (97387772550).

Almost surely, 2^194775545099 is an apocalyptic number.

194775545099 is a deficient number, since it is larger than the sum of its proper divisors (1).

194775545099 is an equidigital number, since it uses as much as digits as its factorization.

194775545099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442000, while the sum is 65.

The spelling of 194775545099 in words is "one hundred ninety-four billion, seven hundred seventy-five million, five hundred forty-five thousand, ninety-nine".