519349840660 has 144 divisors (see below), whose sum is σ = 1371566649600. Its totient is φ = 164131640064.

The previous prime is 519349840651. The next prime is 519349840661. The reversal of 519349840660 is 66048943915.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (519349840661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312021 + ... + 1065859.

It is an arithmetic number, because the mean of its divisors is an integer number (9524768400).

Almost surely, 2^519349840660 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 519349840660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685783324800).

519349840660 is an abundant number, since it is smaller than the sum of its proper divisors (852216808940).

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

519349840660 is a wasteful number, since it uses less digits than its factorization.

519349840660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753918 (or 753909 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 519349840660 in words is "five hundred nineteen billion, three hundred forty-nine million, eight hundred forty thousand, six hundred sixty".