243477993360 has 240 divisors, whose sum is σ = 884334024000. Its totient is φ = 55251366912.

The previous prime is 243477993271. The next prime is 243477993371. The reversal of 243477993360 is 63399774342.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×243477993360² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243477993360.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1560166 + ... + 1709114.

It is an arithmetic number, because the mean of its divisors is an integer number (3684725100).

Almost surely, 2^243477993360 is an apocalyptic number.

243477993360 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 243477993360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442167012000).

243477993360 is an abundant number, since it is smaller than the sum of its proper divisors (640856030640).

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

243477993360 is a wasteful number, since it uses less digits than its factorization.

243477993360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149118 (or 149105 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 57.

The spelling of 243477993360 in words is "two hundred forty-three billion, four hundred seventy-seven million, nine hundred ninety-three thousand, three hundred sixty".