7685128748 has 12 divisors (see below), whose sum is σ = 14671609512. Its totient is φ = 3493240320.

The previous prime is 7685128739. The next prime is 7685128753. The reversal of 7685128748 is 8478215867.

It is a super-2 number, since 2×7685128748² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7685128693 and 7685128702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87330965 + ... + 87331052.

It is an arithmetic number, because the mean of its divisors is an integer number (1222634126).

Almost surely, 2^7685128748 is an apocalyptic number.

It is an amenable number.

7685128748 is a deficient number, since it is larger than the sum of its proper divisors (6986480764).

7685128748 is a wasteful number, since it uses less digits than its factorization.

7685128748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174662032 (or 174662030 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 56.

The square root of 7685128748 is about 87664.8660981125. The cubic root of 7685128748 is about 1973.4087485508.

The spelling of 7685128748 in words is "seven billion, six hundred eighty-five million, one hundred twenty-eight thousand, seven hundred forty-eight".