77110778008 has 16 divisors (see below), whose sum is σ = 157726591560. Its totient is φ = 35050353600.

The previous prime is 77110777999. The next prime is 77110778009. The reversal of 77110778008 is 80087701177.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77110778009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438129333 + ... + 438129508.

Almost surely, 2^77110778008 is an apocalyptic number.

It is an amenable number.

77110778008 is an abundant number, since it is smaller than the sum of its proper divisors (80615813552).

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

77110778008 is a wasteful number, since it uses less digits than its factorization.

77110778008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876258858 (or 876258854 counting only the distinct ones).

The product of its (nonzero) digits is 153664, while the sum is 46.

The spelling of 77110778008 in words is "seventy-seven billion, one hundred ten million, seven hundred seventy-eight thousand, eight".