194477145122 has 90 divisors (see below), whose sum is σ = 339716255157. Its totient is φ = 83460943488.

The previous prime is 194477145077. The next prime is 194477145131. The reversal of 194477145122 is 221541774491.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7696728361 + 186780416761 = 87731^2 + 432181^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=311831.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2343098093 + ... + 2343098175.

Almost surely, 2^194477145122 is an apocalyptic number.

194477145122 is a deficient number, since it is larger than the sum of its proper divisors (145239110035).

194477145122 is an frugal number, since it uses more digits than its factorization.

194477145122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 115 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The spelling of 194477145122 in words is "one hundred ninety-four billion, four hundred seventy-seven million, one hundred forty-five thousand, one hundred twenty-two".