515005665463660 has 144 divisors (see below), whose sum is σ = 1266305012219520. Its totient is φ = 175423414763520.

The previous prime is 515005665463529. The next prime is 515005665463687. The reversal of 515005665463660 is 66364566500515.

It is a junction number, because it is equal to n+sod(n) for n = 515005665463595 and 515005665463604.

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, 91003036 + ... + 96496444.

It is an arithmetic number, because the mean of its divisors is an integer number (8793784807080).

Almost surely, 2^{515005665463660} 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 515005665463660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633152506109760).

515005665463660 is an abundant number, since it is smaller than the sum of its proper divisors (751299346755860).

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

515005665463660 is a wasteful number, since it uses less digits than its factorization.

515005665463660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5494056 (or 5494047 counting only the distinct ones).

The product of its (nonzero) digits is 58320000, while the sum is 58.

The spelling of 515005665463660 in words is "five hundred fifteen trillion, five billion, six hundred sixty-five million, four hundred sixty-three thousand, six hundred sixty".