77768965185 has 16 divisors (see below), whose sum is σ = 124440675840. Its totient is φ = 41473337600.

The previous prime is 77768965181. The next prime is 77768965223. The reversal of 77768965185 is 58156986777.

It is not a de Polignac number, because 77768965185 - 2² = 77768965181 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77768965181) 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, 23025 + ... + 395054.

It is an arithmetic number, because the mean of its divisors is an integer number (7777542240).

Almost surely, 2^77768965185 is an apocalyptic number.

It is an amenable number.

77768965185 is a deficient number, since it is larger than the sum of its proper divisors (46671710655).

77768965185 is a wasteful number, since it uses less digits than its factorization.

77768965185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430488.

The product of its digits is 177811200, while the sum is 69.

The spelling of 77768965185 in words is "seventy-seven billion, seven hundred sixty-eight million, nine hundred sixty-five thousand, one hundred eighty-five".