6840532357680 has 80 divisors (see below), whose sum is σ = 24235028930304. Its totient is φ = 1563550252800.

The previous prime is 6840532357669. The next prime is 6840532357697. The reversal of 6840532357680 is 867532350486.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 6840532357680.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2035871046 + ... + 2035874405.

Almost surely, 2^{6840532357680} is an apocalyptic number.

6840532357680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6840532357680 is an abundant number, since it is smaller than the sum of its proper divisors (17394496572624).

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

6840532357680 is a wasteful number, since it uses less digits than its factorization.

6840532357680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071745474 (or 4071745468 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 57.

The spelling of 6840532357680 in words is "six trillion, eight hundred forty billion, five hundred thirty-two million, three hundred fifty-seven thousand, six hundred eighty".