194475237455 has 4 divisors (see below), whose sum is σ = 233370284952. Its totient is φ = 155580189960.

The previous prime is 194475237443. The next prime is 194475237469. The reversal of 194475237455 is 554732574491.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 194475237455 - 2²⁰ = 194474188879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194475237455.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19447523741 + ... + 19447523750.

It is an arithmetic number, because the mean of its divisors is an integer number (58342571238).

Almost surely, 2^194475237455 is an apocalyptic number.

194475237455 is a deficient number, since it is larger than the sum of its proper divisors (38895047497).

194475237455 is an equidigital number, since it uses as much as digits as its factorization.

194475237455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38895047496.

The product of its digits is 21168000, while the sum is 56.

The spelling of 194475237455 in words is "one hundred ninety-four billion, four hundred seventy-five million, two hundred thirty-seven thousand, four hundred fifty-five".