11828779420 has 12 divisors (see below), whose sum is σ = 24840436824. Its totient is φ = 4731511760.

The previous prime is 11828779397. The next prime is 11828779421. The reversal of 11828779420 is 2497782811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11828779421) 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, 295719466 + ... + 295719505.

It is an arithmetic number, because the mean of its divisors is an integer number (2070036402).

Almost surely, 2^11828779420 is an apocalyptic number.

11828779420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11828779420 is an abundant number, since it is smaller than the sum of its proper divisors (13011657404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11828779420 is a wasteful number, since it uses less digits than its factorization.

11828779420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591438980 (or 591438978 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 11828779420 in words is "eleven billion, eight hundred twenty-eight million, seven hundred seventy-nine thousand, four hundred twenty".