12820888649411 has 4 divisors (see below), whose sum is σ = 12820904108832. Its totient is φ = 12820873189992.

The previous prime is 12820888649363. The next prime is 12820888649423. The reversal of 12820888649411 is 11494688802821.

12820888649411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12820888649411 - 2¹⁸ = 12820888387267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12820888649431) 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, 6410696 + ... + 8169381.

It is an arithmetic number, because the mean of its divisors is an integer number (3205226027208).

Almost surely, 2^{12820888649411} is an apocalyptic number.

12820888649411 is a deficient number, since it is larger than the sum of its proper divisors (15459421).

12820888649411 is an equidigital number, since it uses as much as digits as its factorization.

12820888649411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15459420.

The product of its (nonzero) digits is 14155776, while the sum is 62.

The spelling of 12820888649411 in words is "twelve trillion, eight hundred twenty billion, eight hundred eighty-eight million, six hundred forty-nine thousand, four hundred eleven".