77800660382786 has 64 divisors (see below), whose sum is σ = 134614925136000. Its totient is φ = 33351663582720.

The previous prime is 77800660382693. The next prime is 77800660382813. The reversal of 77800660382786 is 68728306600877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725231960 + ... + 725339228.

It is an arithmetic number, because the mean of its divisors is an integer number (2103358205250).

Almost surely, 2^{77800660382786} is an apocalyptic number.

77800660382786 is a deficient number, since it is larger than the sum of its proper divisors (56814264753214).

77800660382786 is a wasteful number, since it uses less digits than its factorization.

77800660382786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115107.

The product of its (nonzero) digits is 227598336, while the sum is 68.

The spelling of 77800660382786 in words is "seventy-seven trillion, eight hundred billion, six hundred sixty million, three hundred eighty-two thousand, seven hundred eighty-six".