111673412777 has 6 divisors (see below), whose sum is σ = 118628850558. Its totient is φ = 105104388224.

The previous prime is 111673412723. The next prime is 111673412789. The reversal of 111673412777 is 777214376111.

It can be written as a sum of positive squares in 3 ways, for example, as 17706028096 + 93967384681 = 133064^2 + 306541^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111673412777 is a prime.

It is a super-2 number, since 2×111673412777² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111673412717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193206308 + ... + 193206885.

It is an arithmetic number, because the mean of its divisors is an integer number (19771475093).

Almost surely, 2^111673412777 is an apocalyptic number.

111673412777 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

111673412777 is a deficient number, since it is larger than the sum of its proper divisors (6955437781).

111673412777 is an equidigital number, since it uses as much as digits as its factorization.

111673412777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386413227 (or 386413210 counting only the distinct ones).

The product of its digits is 345744, while the sum is 47.

Adding to 111673412777 its reverse (777214376111), we get a palindrome (888887788888).

The spelling of 111673412777 in words is "one hundred eleven billion, six hundred seventy-three million, four hundred twelve thousand, seven hundred seventy-seven".