12821413335694 has 4 divisors (see below), whose sum is σ = 19232120003544. Its totient is φ = 6410706667846.

The previous prime is 12821413335691. The next prime is 12821413335697. The reversal of 12821413335694 is 49653331412821.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12821413335691) and next prime (12821413335697).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12821413335691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205353333922 + ... + 3205353333925.

It is an arithmetic number, because the mean of its divisors is an integer number (4808030000886).

Almost surely, 2^{12821413335694} is an apocalyptic number.

12821413335694 is a deficient number, since it is larger than the sum of its proper divisors (6410706667850).

12821413335694 is an equidigital number, since it uses as much as digits as its factorization.

12821413335694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410706667849.

The product of its digits is 3732480, while the sum is 52.

The spelling of 12821413335694 in words is "twelve trillion, eight hundred twenty-one billion, four hundred thirteen million, three hundred thirty-five thousand, six hundred ninety-four".