243023614423440 has 320 divisors, whose sum is σ = 772887389041152. Its totient is φ = 63132399616000.

The previous prime is 243023614423423. The next prime is 243023614423459. The reversal of 243023614423440 is 44324416320342.

It is a junction number, because it is equal to n+sod(n) for n = 243023614423392 and 243023614423401.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20572550974 + ... + 20572562786.

Almost surely, 2^{243023614423440} is an apocalyptic number.

243023614423440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243023614423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386443694520576).

243023614423440 is an abundant number, since it is smaller than the sum of its proper divisors (529863774617712).

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

243023614423440 is a wasteful number, since it uses less digits than its factorization.

243023614423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14778 (or 14772 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 42.

The spelling of 243023614423440 in words is "two hundred forty-three trillion, twenty-three billion, six hundred fourteen million, four hundred twenty-three thousand, four hundred forty".