7985303556 has 12 divisors (see below), whose sum is σ = 18632374992. Its totient is φ = 2661767848.

The previous prime is 7985303551. The next prime is 7985303561. The reversal of 7985303556 is 6553035897.

It is an interprime number because it is at equal distance from previous prime (7985303551) and next prime (7985303561).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7985303499 and 7985303508.

It is not an unprimeable number, because it can be changed into a prime (7985303551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332720970 + ... + 332720993.

It is an arithmetic number, because the mean of its divisors is an integer number (1552697916).

Almost surely, 2^7985303556 is an apocalyptic number.

It is an amenable number.

7985303556 is an abundant number, since it is smaller than the sum of its proper divisors (10647071436).

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

7985303556 is a wasteful number, since it uses less digits than its factorization.

7985303556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665441970 (or 665441968 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 51.

The square root of 7985303556 is about 89360.5257146577. The cubic root of 7985303556 is about 1998.7745456175.

The spelling of 7985303556 in words is "seven billion, nine hundred eighty-five million, three hundred three thousand, five hundred fifty-six".