775775617161 has 16 divisors (see below), whose sum is σ = 1095232737600. Its totient is φ = 486752237568.

The previous prime is 775775617147. The next prime is 775775617187. The reversal of 775775617161 is 161716577577.

It is not a de Polignac number, because 775775617161 - 2⁵ = 775775617129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 775775617095 and 775775617104.

It is not an unprimeable number, because it can be changed into a prime (775775617061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3682170 + ... + 3887148.

It is an arithmetic number, because the mean of its divisors is an integer number (68452046100).

Almost surely, 2^775775617161 is an apocalyptic number.

It is an amenable number.

775775617161 is a deficient number, since it is larger than the sum of its proper divisors (319457120439).

775775617161 is a wasteful number, since it uses less digits than its factorization.

775775617161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279208.

The product of its digits is 15126300, while the sum is 60.

The spelling of 775775617161 in words is "seven hundred seventy-five billion, seven hundred seventy-five million, six hundred seventeen thousand, one hundred sixty-one".