11812421830 has 16 divisors (see below), whose sum is σ = 23195301264. Its totient is φ = 4295426080.

The previous prime is 11812421779. The next prime is 11812421837. The reversal of 11812421830 is 3812421811.

It is a junction number, because it is equal to n+sod(n) for n = 11812421792 and 11812421801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11812421837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53692717 + ... + 53692936.

It is an arithmetic number, because the mean of its divisors is an integer number (1449706329).

Almost surely, 2^11812421830 is an apocalyptic number.

11812421830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11812421830 is a deficient number, since it is larger than the sum of its proper divisors (11382879434).

11812421830 is a wasteful number, since it uses less digits than its factorization.

11812421830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107385671.

The product of its (nonzero) digits is 3072, while the sum is 31.

The spelling of 11812421830 in words is "eleven billion, eight hundred twelve million, four hundred twenty-one thousand, eight hundred thirty".