12421789377 has 32 divisors (see below), whose sum is σ = 17949634560. Its totient is φ = 7621088640.

The previous prime is 12421789361. The next prime is 12421789409. The reversal of 12421789377 is 77398712421.

12421789377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12421789377 - 2⁴ = 12421789361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12421789577) 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 31 ways as a sum of consecutive naturals, for example, 158877 + ... + 223797.

It is an arithmetic number, because the mean of its divisors is an integer number (560926080).

Almost surely, 2^12421789377 is an apocalyptic number.

It is an amenable number.

12421789377 is a deficient number, since it is larger than the sum of its proper divisors (5527845183).

12421789377 is a wasteful number, since it uses less digits than its factorization.

12421789377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65053.

The product of its digits is 1185408, while the sum is 51.

The spelling of 12421789377 in words is "twelve billion, four hundred twenty-one million, seven hundred eighty-nine thousand, three hundred seventy-seven".