493311885440 has 128 divisors (see below), whose sum is σ = 1294732365120. Its totient is φ = 178243153920.

The previous prime is 493311885439. The next prime is 493311885449. The reversal of 493311885440 is 44588113394.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (493311885449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882119 + ... + 1328441.

Almost surely, 2^493311885440 is an apocalyptic number.

493311885440 is a gapful number since it is divisible by the number (40) 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 493311885440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647366182560).

493311885440 is an abundant number, since it is smaller than the sum of its proper divisors (801420479680).

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

493311885440 is a wasteful number, since it uses less digits than its factorization.

493311885440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446510 (or 446498 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 493311885440 in words is "four hundred ninety-three billion, three hundred eleven million, eight hundred eighty-five thousand, four hundred forty".