11420801279 has 4 divisors (see below), whose sum is σ = 11457289776. Its totient is φ = 11384312784.

The previous prime is 11420801269. The next prime is 11420801339. The reversal of 11420801279 is 97210802411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11420801279 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 (11420801209) 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, 18243779 + ... + 18244404.

It is an arithmetic number, because the mean of its divisors is an integer number (2864322444).

Almost surely, 2^11420801279 is an apocalyptic number.

11420801279 is a deficient number, since it is larger than the sum of its proper divisors (36488497).

11420801279 is an equidigital number, since it uses as much as digits as its factorization.

11420801279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36488496.

The product of its (nonzero) digits is 8064, while the sum is 35.

The spelling of 11420801279 in words is "eleven billion, four hundred twenty million, eight hundred one thousand, two hundred seventy-nine".