12820478589430 has 8 divisors (see below), whose sum is σ = 23076861460992. Its totient is φ = 5128191435768.

The previous prime is 12820478589427. The next prime is 12820478589431. The reversal of 12820478589430 is 3498587402821.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12820478589431) 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, 641023929462 + ... + 641023929481.

It is an arithmetic number, because the mean of its divisors is an integer number (2884607682624).

Almost surely, 2^{12820478589430} is an apocalyptic number.

12820478589430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12820478589430 is a deficient number, since it is larger than the sum of its proper divisors (10256382871562).

12820478589430 is a wasteful number, since it uses less digits than its factorization.

12820478589430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282047858950.

The product of its (nonzero) digits is 30965760, while the sum is 61.

The spelling of 12820478589430 in words is "twelve trillion, eight hundred twenty billion, four hundred seventy-eight million, five hundred eighty-nine thousand, four hundred thirty".