243326812020 has 24 divisors (see below), whose sum is σ = 681315073824. Its totient is φ = 64887149856.

The previous prime is 243326812009. The next prime is 243326812049. The reversal of 243326812020 is 20218623342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2027723374 + ... + 2027723493.

It is an arithmetic number, because the mean of its divisors is an integer number (28388128076).

Almost surely, 2^243326812020 is an apocalyptic number.

243326812020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243326812020 is an abundant number, since it is smaller than the sum of its proper divisors (437988261804).

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

243326812020 is a wasteful number, since it uses less digits than its factorization.

243326812020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055446879 (or 4055446877 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 243326812020 in words is "two hundred forty-three billion, three hundred twenty-six million, eight hundred twelve thousand, twenty".