1111345677779 has 4 divisors (see below), whose sum is σ = 1149667942560. Its totient is φ = 1073023413000.

The previous prime is 1111345677751. The next prime is 1111345677791. The reversal of 1111345677779 is 9777765431111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111345677779 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1111345677979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19161132347 + ... + 19161132404.

It is an arithmetic number, because the mean of its divisors is an integer number (287416985640).

Almost surely, 2^{1111345677779} is an apocalyptic number.

1111345677779 is a deficient number, since it is larger than the sum of its proper divisors (38322264781).

1111345677779 is an equidigital number, since it uses as much as digits as its factorization.

1111345677779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38322264780.

The product of its digits is 7779240, while the sum is 59.

The spelling of 1111345677779 in words is "one trillion, one hundred eleven billion, three hundred forty-five million, six hundred seventy-seven thousand, seven hundred seventy-nine".