1111223456779 has 8 divisors (see below), whose sum is σ = 1116903398688. Its totient is φ = 1105543911360.

The previous prime is 1111223456771. The next prime is 1111223456807. The reversal of 1111223456779 is 9776543221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111223456779 - 2³ = 1111223456771 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 (1111223456771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6712159 + ... + 6875719.

It is an arithmetic number, because the mean of its divisors is an integer number (139612924836).

Almost surely, 2^{1111223456779} is an apocalyptic number.

1111223456779 is a deficient number, since it is larger than the sum of its proper divisors (5679941909).

1111223456779 is a wasteful number, since it uses less digits than its factorization.

1111223456779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198245.

The product of its digits is 635040, while the sum is 49.

The spelling of 1111223456779 in words is "one trillion, one hundred eleven billion, two hundred twenty-three million, four hundred fifty-six thousand, seven hundred seventy-nine".