7841787680 has 48 divisors (see below), whose sum is σ = 18623291904. Its totient is φ = 3120280320.

The previous prime is 7841787649. The next prime is 7841787691. The reversal of 7841787680 is 867871487.

It is a happy number.

It is a super-2 number, since 2×7841787680² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97742 + ... + 158861.

It is an arithmetic number, because the mean of its divisors is an integer number (387985248).

Almost surely, 2^7841787680 is an apocalyptic number.

It is an amenable number.

7841787680 is an abundant number, since it is smaller than the sum of its proper divisors (10781504224).

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

7841787680 is a wasteful number, since it uses less digits than its factorization.

7841787680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256809 (or 256801 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 56.

The square root of 7841787680 is about 88553.8688031189. The cubic root of 7841787680 is about 1986.7277586326.

The spelling of 7841787680 in words is "seven billion, eight hundred forty-one million, seven hundred eighty-seven thousand, six hundred eighty".