6615980698880 has 288 divisors, whose sum is σ = 18289981350144. Its totient is φ = 2245991989248.

The previous prime is 6615980698829. The next prime is 6615980698889. The reversal of 6615980698880 is 888960895166.

It is a junction number, because it is equal to n+sod(n) for n = 6615980698798 and 6615980698807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6615980698889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1228135547 + ... + 1228140933.

It is an arithmetic number, because the mean of its divisors is an integer number (63506879688).

Almost surely, 2^{6615980698880} 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 6615980698880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9144990675072).

6615980698880 is an abundant number, since it is smaller than the sum of its proper divisors (11674000651264).

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

6615980698880 is a wasteful number, since it uses less digits than its factorization.

6615980698880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741 (or 6727 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 74.

The spelling of 6615980698880 in words is "six trillion, six hundred fifteen billion, nine hundred eighty million, six hundred ninety-eight thousand, eight hundred eighty".