20312443645446 has 8 divisors (see below), whose sum is σ = 40624887290904. Its totient is φ = 6770814548480.

The previous prime is 20312443645397. The next prime is 20312443645463. The reversal of 20312443645446 is 64454634421302.

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

20312443645446 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20312443645395 and 20312443645404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1692703637115 + ... + 1692703637126.

It is an arithmetic number, because the mean of its divisors is an integer number (5078110911363).

Almost surely, 2^{20312443645446} is an apocalyptic number.

20312443645446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20312443645446 is a wasteful number, since it uses less digits than its factorization.

20312443645446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385407274246.

The product of its (nonzero) digits is 6635520, while the sum is 48.

The spelling of 20312443645446 in words is "twenty trillion, three hundred twelve billion, four hundred forty-three million, six hundred forty-five thousand, four hundred forty-six".