11639005279 has 4 divisors (see below), whose sum is σ = 12697096680. Its totient is φ = 10580913880.

The previous prime is 11639005267. The next prime is 11639005321. The reversal of 11639005279 is 97250093611.

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 11639005279 - 2³¹ = 9491521631 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 (11639005219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529045684 + ... + 529045705.

It is an arithmetic number, because the mean of its divisors is an integer number (3174274170).

Almost surely, 2^11639005279 is an apocalyptic number.

11639005279 is a deficient number, since it is larger than the sum of its proper divisors (1058091401).

11639005279 is a wasteful number, since it uses less digits than its factorization.

11639005279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058091400.

The product of its (nonzero) digits is 102060, while the sum is 43.

The spelling of 11639005279 in words is "eleven billion, six hundred thirty-nine million, five thousand, two hundred seventy-nine".