77123832312 has 16 divisors (see below), whose sum is σ = 192809580840. Its totient is φ = 25707944096.

The previous prime is 77123832307. The next prime is 77123832319. The reversal of 77123832312 is 21323832177.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77123832319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606746483 + ... + 1606746530.

Almost surely, 2^77123832312 is an apocalyptic number.

It is an amenable number.

77123832312 is an abundant number, since it is smaller than the sum of its proper divisors (115685748528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77123832312 is a wasteful number, since it uses less digits than its factorization.

77123832312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213493022 (or 3213493018 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The spelling of 77123832312 in words is "seventy-seven billion, one hundred twenty-three million, eight hundred thirty-two thousand, three hundred twelve".