11421979679 has 16 divisors (see below), whose sum is σ = 12657617280. Its totient is φ = 10220158560.

The previous prime is 11421979633. The next prime is 11421979693. The reversal of 11421979679 is 97697912411.

11421979679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11421979679 - 2³² = 7127012383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421979609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222344 + ... + 268850.

It is an arithmetic number, because the mean of its divisors is an integer number (791101080).

Almost surely, 2^11421979679 is an apocalyptic number.

11421979679 is a deficient number, since it is larger than the sum of its proper divisors (1235637601).

11421979679 is a wasteful number, since it uses less digits than its factorization.

11421979679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46870.

The product of its digits is 1714608, while the sum is 56.

The spelling of 11421979679 in words is "eleven billion, four hundred twenty-one million, nine hundred seventy-nine thousand, six hundred seventy-nine".