119778785173 has 4 divisors (see below), whose sum is σ = 123909088140. Its totient is φ = 115648482208.

The previous prime is 119778785167. The next prime is 119778785201. The reversal of 119778785173 is 371587877911.

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

It can be written as a sum of positive squares in 2 ways, for example, as 61783067844 + 57995717329 = 248562^2 + 240823^2 .

It is a cyclic number.

It is not a de Polignac number, because 119778785173 - 2¹³ = 119778776981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119778785123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2065151440 + ... + 2065151497.

It is an arithmetic number, because the mean of its divisors is an integer number (30977272035).

Almost surely, 2^119778785173 is an apocalyptic number.

It is an amenable number.

119778785173 is a deficient number, since it is larger than the sum of its proper divisors (4130302967).

119778785173 is an equidigital number, since it uses as much as digits as its factorization.

119778785173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130302966.

The product of its digits is 20744640, while the sum is 64.

The spelling of 119778785173 in words is "one hundred nineteen billion, seven hundred seventy-eight million, seven hundred eighty-five thousand, one hundred seventy-three".