77786152682368 has 64 divisors (see below), whose sum is σ = 167817273800400. Its totient is φ = 35700735172608.

The previous prime is 77786152682311. The next prime is 77786152682383. The reversal of 77786152682368 is 86328625168777.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 77786152682294 and 77786152682303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130278921 + ... + 130874632.

Almost surely, 2^{77786152682368} is an apocalyptic number.

It is an amenable number.

77786152682368 is an abundant number, since it is smaller than the sum of its proper divisors (90031121118032).

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

77786152682368 is a wasteful number, since it uses less digits than its factorization.

77786152682368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261153759 (or 261153747 counting only the distinct ones).

The product of its digits is 2275983360, while the sum is 76.

The spelling of 77786152682368 in words is "seventy-seven trillion, seven hundred eighty-six billion, one hundred fifty-two million, six hundred eighty-two thousand, three hundred sixty-eight".