11239878279 has 24 divisors (see below), whose sum is σ = 18350826240. Its totient is φ = 6084744624.

The previous prime is 11239878269. The next prime is 11239878301. The reversal of 11239878279 is 97287893211.

It is not a de Polignac number, because 11239878279 - 2⁹ = 11239877767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11239878229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2009359 + ... + 2014944.

It is an arithmetic number, because the mean of its divisors is an integer number (764617760).

Almost surely, 2^11239878279 is an apocalyptic number.

11239878279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11239878279 is a deficient number, since it is larger than the sum of its proper divisors (7110947961).

11239878279 is a wasteful number, since it uses less digits than its factorization.

11239878279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024339 (or 4024332 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 57.

The spelling of 11239878279 in words is "eleven billion, two hundred thirty-nine million, eight hundred seventy-eight thousand, two hundred seventy-nine".