12730403821 has 8 divisors (see below), whose sum is σ = 12898791360. Its totient is φ = 12563113728.

The previous prime is 12730403753. The next prime is 12730403849. The reversal of 12730403821 is 12830403721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12730403821 - 2¹¹ = 12730401773 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 (12730401821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250996 + ... + 297421.

It is an arithmetic number, because the mean of its divisors is an integer number (1612348920).

Almost surely, 2^12730403821 is an apocalyptic number.

It is an amenable number.

12730403821 is a deficient number, since it is larger than the sum of its proper divisors (168387539).

12730403821 is a wasteful number, since it uses less digits than its factorization.

12730403821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548723.

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 12730403821 in words is "twelve billion, seven hundred thirty million, four hundred three thousand, eight hundred twenty-one".