77786382342836 has 6 divisors (see below), whose sum is σ = 136126169099970. Its totient is φ = 38893191171416.

The previous prime is 77786382342827. The next prime is 77786382342847. The reversal of 77786382342836 is 63824328368777.

It can be written as a sum of positive squares in only one way, i.e., 55011592320400 + 22774790022436 = 7416980^2 + 4772294^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9723297792851 + ... + 9723297792858.

It is an arithmetic number, because the mean of its divisors is an integer number (22687694849995).

Almost surely, 2^{77786382342836} is an apocalyptic number.

It is an amenable number.

77786382342836 is a deficient number, since it is larger than the sum of its proper divisors (58339786757134).

77786382342836 is a wasteful number, since it uses less digits than its factorization.

77786382342836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19446595585713 (or 19446595585711 counting only the distinct ones).

The product of its digits is 2731180032, while the sum is 74.

The spelling of 77786382342836 in words is "seventy-seven trillion, seven hundred eighty-six billion, three hundred eighty-two million, three hundred forty-two thousand, eight hundred thirty-six".