6615051321320 has 128 divisors (see below), whose sum is σ = 17210686429440. Its totient is φ = 2266427412480.

The previous prime is 6615051321301. The next prime is 6615051321343. The reversal of 6615051321320 is 231231505166.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4642142 + ... + 5897421.

It is an arithmetic number, because the mean of its divisors is an integer number (134458487730).

Almost surely, 2^{6615051321320} is an apocalyptic number.

It is an amenable number.

6615051321320 is an abundant number, since it is smaller than the sum of its proper divisors (10595635108120).

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

6615051321320 is a wasteful number, since it uses less digits than its factorization.

6615051321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539675 (or 10539671 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 6615051321320 its reverse (231231505166), we get a palindrome (6846282826486).

The spelling of 6615051321320 in words is "six trillion, six hundred fifteen billion, fifty-one million, three hundred twenty-one thousand, three hundred twenty".