6515243934680 has 128 divisors (see below), whose sum is σ = 16030673971200. Its totient is φ = 2368578240000.

The previous prime is 6515243934623. The next prime is 6515243934713. The reversal of 6515243934680 is 864393425156.

It is a congruent number.

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, 27609431 + ... + 27844409.

It is an arithmetic number, because the mean of its divisors is an integer number (125239640400).

Almost surely, 2^{6515243934680} 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 6515243934680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8015336985600).

6515243934680 is an abundant number, since it is smaller than the sum of its proper divisors (9515430036520).

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

6515243934680 is a wasteful number, since it uses less digits than its factorization.

6515243934680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235825 (or 235821 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 56.

The spelling of 6515243934680 in words is "six trillion, five hundred fifteen billion, two hundred forty-three million, nine hundred thirty-four thousand, six hundred eighty".