77894222968799 has 32 divisors (see below), whose sum is σ = 80983536691200. Its totient is φ = 74862097551360.

The previous prime is 77894222968777. The next prime is 77894222968819. The reversal of 77894222968799 is 99786922249877.

It is a cyclic number.

It is not a de Polignac number, because 77894222968799 - 2¹² = 77894222964703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77894222968999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8684823587 + ... + 8684832555.

It is an arithmetic number, because the mean of its divisors is an integer number (2530735521600).

Almost surely, 2^{77894222968799} is an apocalyptic number.

77894222968799 is a deficient number, since it is larger than the sum of its proper divisors (3089313722401).

77894222968799 is a wasteful number, since it uses less digits than its factorization.

77894222968799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17043.

The product of its digits is 27653197824, while the sum is 89.

The spelling of 77894222968799 in words is "seventy-seven trillion, eight hundred ninety-four billion, two hundred twenty-two million, nine hundred sixty-eight thousand, seven hundred ninety-nine".