11111117839 has 8 divisors (see below), whose sum is σ = 11792798640. Its totient is φ = 10432557696.

The previous prime is 11111117813. The next prime is 11111117921. The reversal of 11111117839 is 93871111111.

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 11111117839 - 2²¹ = 11109020687 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 (11111117639) 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, 772824 + ... + 787069.

It is an arithmetic number, because the mean of its divisors is an integer number (1474099830).

Almost surely, 2^11111117839 is an apocalyptic number.

11111117839 is a deficient number, since it is larger than the sum of its proper divisors (681680801).

11111117839 is a wasteful number, since it uses less digits than its factorization.

11111117839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560329.

The product of its digits is 1512, while the sum is 34.

The spelling of 11111117839 in words is "eleven billion, one hundred eleven million, one hundred seventeen thousand, eight hundred thirty-nine".