243155055444 has 96 divisors (see below), whose sum is σ = 658666530816. Its totient is φ = 68376147840.

The previous prime is 243155055419. The next prime is 243155055487. The reversal of 243155055444 is 444550551342.

243155055444 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 243155055396 and 243155055405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6628377 + ... + 6664959.

It is an arithmetic number, because the mean of its divisors is an integer number (6861109696).

Almost surely, 2^243155055444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243155055444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329333265408).

243155055444 is an abundant number, since it is smaller than the sum of its proper divisors (415511475372).

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

243155055444 is a wasteful number, since it uses less digits than its factorization.

243155055444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37845 (or 37843 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 243155055444 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-five thousand, four hundred forty-four".