2064673547421 has 4 divisors (see below), whose sum is σ = 2752898063232. Its totient is φ = 1376449031612.

The previous prime is 2064673547413. The next prime is 2064673547437. The reversal of 2064673547421 is 1247453764602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2064673547421 - 2³ = 2064673547413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064673547471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344112257901 + ... + 344112257906.

It is an arithmetic number, because the mean of its divisors is an integer number (688224515808).

Almost surely, 2^{2064673547421} is an apocalyptic number.

It is an amenable number.

2064673547421 is a deficient number, since it is larger than the sum of its proper divisors (688224515811).

2064673547421 is an equidigital number, since it uses as much as digits as its factorization.

2064673547421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688224515810.

The product of its (nonzero) digits is 6773760, while the sum is 51.

The spelling of 2064673547421 in words is "two trillion, sixty-four billion, six hundred seventy-three million, five hundred forty-seven thousand, four hundred twenty-one".