515221243322340 has 48 divisors (see below), whose sum is σ = 1442621039130432. Its totient is φ = 137392183188096.

The previous prime is 515221243322333. The next prime is 515221243322417. The reversal of 515221243322340 is 43223342122515.

It is a super-2 number, since 2×515221243322340² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58493362 + ... + 66722678.

It is an arithmetic number, because the mean of its divisors is an integer number (30054604981884).

Almost surely, 2^{515221243322340} is an apocalyptic number.

It is an amenable number.

515221243322340 is an abundant number, since it is smaller than the sum of its proper divisors (927399795808092).

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

515221243322340 is a wasteful number, since it uses less digits than its factorization.

515221243322340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9272796 (or 9272794 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 515221243322340 its reverse (43223342122515), we get a palindrome (558444585444855).

The spelling of 515221243322340 in words is "five hundred fifteen trillion, two hundred twenty-one billion, two hundred forty-three million, three hundred twenty-two thousand, three hundred forty".