77863335216 has 20 divisors (see below), whose sum is σ = 201146949432. Its totient is φ = 25954445056.

The previous prime is 77863335163. The next prime is 77863335227. The reversal of 77863335216 is 61253336877.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811076361 + ... + 811076456.

Almost surely, 2^77863335216 is an apocalyptic number.

It is an amenable number.

77863335216 is an abundant number, since it is smaller than the sum of its proper divisors (123283614216).

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

77863335216 is a wasteful number, since it uses less digits than its factorization.

77863335216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622152828 (or 1622152822 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 51.

The spelling of 77863335216 in words is "seventy-seven billion, eight hundred sixty-three million, three hundred thirty-five thousand, two hundred sixteen".