12421445663660 has 48 divisors (see below), whose sum is σ = 29437658076960. Its totient is φ = 4361134525440.

The previous prime is 12421445663659. The next prime is 12421445663681. The reversal of 12421445663660 is 6636654412421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12421445663599 and 12421445663608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973461149 + ... + 973473908.

It is an arithmetic number, because the mean of its divisors is an integer number (613284543270).

Almost surely, 2^{12421445663660} is an apocalyptic number.

12421445663660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421445663660 is an abundant number, since it is smaller than the sum of its proper divisors (17016212413300).

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

12421445663660 is a wasteful number, since it uses less digits than its factorization.

12421445663660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946935106 (or 1946935104 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 12421445663660 in words is "twelve trillion, four hundred twenty-one billion, four hundred forty-five million, six hundred sixty-three thousand, six hundred sixty".