77117892044543 has 16 divisors (see below), whose sum is σ = 92800586872320. Its totient is φ = 62603699211936.

The previous prime is 77117892044521. The next prime is 77117892044639. The reversal of 77117892044543 is 34544029871177.

It is a cyclic number.

It is not a de Polignac number, because 77117892044543 - 2¹⁴ = 77117892028159 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 (77117892047543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84490955 + ... + 85398812.

It is an arithmetic number, because the mean of its divisors is an integer number (5800036679520).

Almost surely, 2^{77117892044543} is an apocalyptic number.

77117892044543 is a deficient number, since it is larger than the sum of its proper divisors (15682694827777).

77117892044543 is a wasteful number, since it uses less digits than its factorization.

77117892044543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169893206.

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 77117892044543 in words is "seventy-seven trillion, one hundred seventeen billion, eight hundred ninety-two million, forty-four thousand, five hundred forty-three".