190779807745 has 16 divisors (see below), whose sum is σ = 234278016192. Its totient is φ = 149062898880.

The previous prime is 190779807733. The next prime is 190779807749. The reversal of 190779807745 is 547708977091.

It is a happy number.

It is not a de Polignac number, because 190779807745 - 2²⁹ = 190242936833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190779807749) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3672855 + ... + 3724435.

It is an arithmetic number, because the mean of its divisors is an integer number (14642376012).

Almost surely, 2^190779807745 is an apocalyptic number.

It is an amenable number.

190779807745 is a deficient number, since it is larger than the sum of its proper divisors (43498208447).

190779807745 is a wasteful number, since it uses less digits than its factorization.

190779807745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68832.

The product of its (nonzero) digits is 31116960, while the sum is 64.

The spelling of 190779807745 in words is "one hundred ninety billion, seven hundred seventy-nine million, eight hundred seven thousand, seven hundred forty-five".