1779111962879 has 4 divisors (see below), whose sum is σ = 1812680113176. Its totient is φ = 1745543812584.

The previous prime is 1779111962839. The next prime is 1779111962993. The reversal of 1779111962879 is 9782691119771.

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

It is a cyclic number.

It is not a de Polignac number, because 1779111962879 - 2²⁸ = 1778843527423 is a prime.

It is a super-3 number, since 3×1779111962879³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1779111962809) 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, 16784075069 + ... + 16784075174.

It is an arithmetic number, because the mean of its divisors is an integer number (453170028294).

Almost surely, 2^{1779111962879} is an apocalyptic number.

1779111962879 is a deficient number, since it is larger than the sum of its proper divisors (33568150297).

1779111962879 is an equidigital number, since it uses as much as digits as its factorization.

1779111962879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33568150296.

The product of its digits is 24004512, while the sum is 68.

The spelling of 1779111962879 in words is "one trillion, seven hundred seventy-nine billion, one hundred eleven million, nine hundred sixty-two thousand, eight hundred seventy-nine".