77555161189 has 16 divisors (see below), whose sum is σ = 85374910080. Its totient is φ = 69865920000.

The previous prime is 77555161181. The next prime is 77555161207. The reversal of 77555161189 is 98116155577.

It is a cyclic number.

It is not a de Polignac number, because 77555161189 - 2³ = 77555161181 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 (77555161181) 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, 622269 + ... + 736429.

It is an arithmetic number, because the mean of its divisors is an integer number (5335931880).

Almost surely, 2^77555161189 is an apocalyptic number.

It is an amenable number.

77555161189 is a deficient number, since it is larger than the sum of its proper divisors (7819748891).

77555161189 is a wasteful number, since it uses less digits than its factorization.

77555161189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114732.

The product of its digits is 2646000, while the sum is 55.

The spelling of 77555161189 in words is "seventy-seven billion, five hundred fifty-five million, one hundred sixty-one thousand, one hundred eighty-nine".