77044343111 has 16 divisors (see below), whose sum is σ = 81989363808. Its totient is φ = 72145766400.

The previous prime is 77044343053. The next prime is 77044343141. The reversal of 77044343111 is 11134344077.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77044343111 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 (77044343141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4830596 + ... + 4846518.

It is an arithmetic number, because the mean of its divisors is an integer number (5124335238).

Almost surely, 2^77044343111 is an apocalyptic number.

77044343111 is a deficient number, since it is larger than the sum of its proper divisors (4945020697).

77044343111 is a wasteful number, since it uses less digits than its factorization.

77044343111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17362.

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 77044343111 its reverse (11134344077), we get a palindrome (88178687188).

The spelling of 77044343111 in words is "seventy-seven billion, forty-four million, three hundred forty-three thousand, one hundred eleven".