77914112788 has 6 divisors (see below), whose sum is σ = 136349697386. Its totient is φ = 38957056392.

The previous prime is 77914112753. The next prime is 77914112827. The reversal of 77914112788 is 88721141977.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74522448144 + 3391664644 = 272988^2 + 58238^2 .

It is a congruent 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 as a sum of consecutive naturals, namely, 9739264095 + ... + 9739264102.

Almost surely, 2^77914112788 is an apocalyptic number.

It is an amenable number.

77914112788 is a deficient number, since it is larger than the sum of its proper divisors (58435584598).

77914112788 is a wasteful number, since it uses less digits than its factorization.

77914112788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19478528201 (or 19478528199 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 55.

The spelling of 77914112788 in words is "seventy-seven billion, nine hundred fourteen million, one hundred twelve thousand, seven hundred eighty-eight".